Reseller craft, honest math
Guides and teardowns for people who flip, store, list and ship real inventory. No affiliate links, no rounding in our favor.
Shopify chargebacks: the $15 fee, the 7–21 day window, and what Shopify Protect doesn't cover
eBay's payment dispute process has its own $20 fee and Seller Hub rules — Shopify chargebacks run on the card network's clock entirely. Here's the $15 dispute fee, the real evidence deadline, and why Shopify Protect skips the exact dispute reason resellers get hit with most.
USPS shipping insurance for resellers: what's free, what to buy, and how a claim actually pays out
Priority Mail and Ground Advantage both already include $100 of insurance for free — most sellers only know about one of them. Here's the real coverage defaults, what's excluded outright, and the exact filing window that trips people up when a package actually goes missing.
USPS Media Mail and vinyl records: what actually qualifies, what it costs, and what gets packages flagged
Vinyl records do qualify for Media Mail's roughly $4 first-pound rate — but one non-qualifying item in the same box voids the whole shipment, and USPS actually opens packages to check. The real 2026 numbers, the rule that catches record sellers most, and why it's the wrong choice for a buyer in a hurry.
The eBay selling limit new sellers always hit first — 10 items, $500, and how it actually moves
You list your eleventh item, or your ninth sells for enough to cross $500, and eBay stops you cold. The starting cap almost nobody explains before it hits, how the monthly review actually raises it, and the separate category limit that catches sellers even after their account limit has grown.
eBay Best Offer fees: what accepting a lower price actually costs you
Accepting a lowball offer feels like it should mean a smaller fee bill too — and it does, but not by much. eBay charges the same percentage on whatever price you accept, shipping doesn't move, and a March 2026 change gives buyers four days instead of one to answer your counteroffer.
FIFO vs. specific identification: how resellers should actually cost repeat-purchased inventory
Buy the same sneaker three times at three different prices, then sell four pairs — your reported profit swings by dozens of dollars depending which costing method you used. Here's FIFO, specific identification, and the $32M IRS exception that covers almost every reseller.
Vinyl grading for resellers: the eight-grade scale, and what each grade is actually worth
"VG+" isn't a vibe — it's a specific point on an eight-grade scale that roughly halves a record's value from Near Mint. Here's the Goldmine Standard Discogs runs on, the media/sleeve split, and why overgrading costs more on Discogs than anywhere else.
eBay payment disputes: the $20 fee, the $750 signature line, and what Seller Protection actually covers
A payment dispute isn't the same thing as an eBay Money Back Guarantee case — different clock, different judge, different fee. Here's the $20 dispute fee, the $750 signature-confirmation cutoff, and exactly what tracking has to show for eBay to cover the loss instead of you.
Discogs' 9% selling fee: what it's actually 9% of, and where it stops
Discogs charges 9% on every sale — but 9% of what, exactly, and does a $3,000 pressing really cost $270 to sell? The shipping inclusion, the $0.10 floor, the $150 ceiling, and what "no prepaid labels" actually means for Media Mail in 2026.
Sell-through rate: the inventory number that catches overbuying before your cash flow does
Profit-per-item math looks fine right up until your bins are full and your sourcing budget is dry. Here's the formula resellers skip — sell-through rate — plus the real Q4 numbers, so you can tell actual seasonality from folklore before you overbuy a category.
A mismatched SSN can cost you 24% of a payout — backup withholding for eBay and Shopify sellers
New federal rules that took effect this month tie backup withholding to the same $20,000-and-200-transaction line as the 1099-K. Below it, a bad taxpayer ID mostly doesn't matter yet. Cross it, and a name that doesn't match your Social Security number can turn 24% of your next gross payout into a number you don't see again until you file.
eBay lowered its trading card authentication threshold to $200 — what Authenticity Guarantee actually costs sellers
eBay doesn't charge you anything to route a sale through Authenticity Guarantee. It also doesn't tell you upfront that the item won't reach your buyer — or start your payout clock — for a week or more longer than a normal sale. Here's what changed for cards, what applies to sneakers, and the cash-flow math nobody mentions.
Self-employment tax for resellers: the 15.3%, the wage base cap, and the surtax that isn't deductible
Self-employment tax isn't a flat 15.3% cut of your reselling profit. There's a wage base cap on the Social Security piece, a deduction for half of the total — and a 0.9% Additional Medicare Tax surtax that the law specifically excludes from that deduction. Here's how the pieces fit, including the day-job stacking rule most resellers never see coming.
Should you offer free shipping on eBay? The fee math, not the folklore
Baking shipping into the item price barely changes what eBay takes in fees — the final value fee is charged on the total either way. The real reason free shipping matters is a buyer-facing filter, and it comes with one fee-bracket trap worth knowing about.
Your eBay 'sold' isn't your eBay 'paid' — how payout holds actually work in 2026
eBay marking an order as sold and eBay actually releasing the money are two different events, sometimes weeks apart. Here's what triggers a hold, the exact release timelines for new and established sellers, and why the gap matters for more than just your bank balance.
You started reselling by clearing out your own closet — what's your cost basis?
A lot of reselling businesses start with stuff the owner already had: old sneakers, a drawer of electronics, a collection that grew past the point of enjoying it. None of it has a receipt from a sourcing trip. Here's the actual IRS rule for what those items are worth on day one of the business, and why the answer isn't "what I paid for it."
Solo 401(k) vs SEP-IRA for resellers in 2026 — the numbers, and the Roth catch-up rule that mostly doesn't apply to you
Every self-employed retirement limit went up for 2026, and SECURE 2.0's new Roth catch-up mandate made headlines everywhere. It's keyed to FICA wages, which a sole proprietor's reselling income mostly isn't — here's what a Solo 401(k) and a SEP-IRA actually let a reseller put away this year, and why they're not the same plan.
Dead stock isn't a write-off until you do this — unsellable inventory and Schedule C in 2026
Buying inventory that never sells doesn't deduct itself, and it doesn't deduct itself by sitting unsold either. The write-off happens at disposal — sale, discard, donation, or theft — and each of those triggers it differently, with a donation trap that catches sole proprietors who assume it works like a corporate deduction.
The deduction for everything you spent before your first sale — Section 195 startup costs in 2026
A sourcing course, a scouting trip to size up the local estate-sale circuit, the accounting software you paid for before you'd sold a single item — none of that is inventory or equipment, and most resellers never claim it. A 2025 law change just raised what you can write off immediately from $5,000 to $50,000.
The equipment deduction most resellers don't know exists — Section 179, bonus depreciation, and the de minimis safe harbor in 2026
A postal scale, a laptop, a label printer, storage shelving — none of it has to sit on a multi-year depreciation schedule. Here's how the de minimis safe harbor, Section 179, and now-permanent 100% bonus depreciation actually let resellers write off equipment the year they buy it.
The estimated tax method built for a Q4-heavy reselling year
If most of your profit lands in November and December, the standard estimated-tax safe harbor still wants equal payments starting in April. Form 2210's annualized income installment method fixes that legally — here's how the periods, multipliers, and cutoffs actually work.
eBay's Below Standard fee surcharge: what triggers it, and what it actually costs
Below Standard isn't just a bad badge — it's an automatic 6% surcharge on top of your final value fee, rising to 7% after four straight months. Here's what actually pushes an account into that tier and the real math on what it costs per sale.
Is your reselling a hobby or a business? The IRS test that decides your tax bill in 2026
The IRS decides this with a nine-factor test, not by how you file. Getting it wrong used to be forgivable — a law change that was supposed to land in 2026 got permanently canceled instead, and now a hobby reclassification can tax you on money you never actually made.
The 20% pass-through deduction most resellers qualify for and don't claim right — Section 199A in 2026
Section 199A lets most Schedule C resellers deduct 20% of their business profit before it's taxed. It was made permanent in 2025 and the income limits got wider for 2026 — but the deduction isn't just 20% of your net profit, and almost nobody explains the actual formula.
Why eBay's international fee shows up on sales to a US address — and when eBay International Shipping actually stops it
eBay's 1.65% international fee isn't based on where you shipped the item. It's tied to the buyer's account, which means a sale that looks entirely domestic can still get hit — and sellers report it slipping through even when they're enrolled in eBay International Shipping.
The home office deduction resellers usually miss — inventory storage doesn't need an exclusive room
Most home office deduction guides assume a desk used only for work. Resellers store inventory in a garage or spare room that does other jobs too — and the IRS has a separate, more forgiving rule for exactly that, if you know it exists.
The IRS raised the mileage rate mid-year in 2026 — what your sourcing runs are actually worth now
The standard mileage rate almost never changes outside of January. In 2026 it did: 72.5 cents a mile through June, then 76 cents from July 1 on. Here's what that split actually means for the miles you're already driving to source.
Why your eBay Promoted Listings bill jumped in 2026 — the new attribution model explained
Your ad rate didn't change, but your ad fees might have. On January 13, 2026, eBay quietly rewrote what counts as an 'attributed' sale for Promoted Listings Standard — and it now charges you for a lot of sales the ad never influenced.
Do you get your eBay fees back when a buyer returns an item?
Partly. eBay credits the percentage-based final value fee on a full refund, but keeps the fixed per-order fee and any Promoted Listings spend. Here's the actual math on what a return costs you.
What Shopify actually costs a reseller in 2026 — the fee math beyond the plan price
Shopify's plan price is the smallest number on the bill. Here's what the subscription, Shopify Payments rate, and the third-party gateway penalty actually add up to — and where the break-even points are between tiers.
Why your USPS shipping costs jumped in 2026 — dimensional weight and Cubic pricing explained
USPS raised prices three separate times in 2026 and quietly made oversized-but-light boxes cost more. Here's what dimensional weight and Ground Advantage Cubic pricing actually mean for what you pay to ship.
Is an eBay Store subscription worth it? The break-even math
Basic, Premium, and Anchor all sound like a marketing ladder until you run the actual insertion-fee numbers. Here's how many listings a month it takes before each tier pays for itself.
eBay Top Rated Seller in 2026: the actual numbers, and what losing it costs you
eBay's fee discount comes from Top Rated Plus, not just Top Rated Seller status — and the two get conflated constantly. Here are the real thresholds, the restrictions on the discount, and what happens the month you miss one.
How much should you pay for it? A sourcing formula for resellers
Most resellers price a thrift find on a gut feeling — 'that looks like a $40 item.' Here's the actual math: work backward from real comps and fees to a hard buy-price ceiling before you check out.
Do eBay resellers need to collect sales tax? Marketplace facilitator laws in 2026
eBay collects sales tax for you in every state that requires it — but that's not the whole story if you also sell on your own Shopify store. Here's what actually applies to you.
Liquidation pallets for resellers: manifests, grading, and the real math
Liquidation pallets promise thousands in MSRP for a few hundred bucks. Here's how manifests, condition grades, and resale certificates actually work in 2026.
Quarterly estimated taxes for resellers: what you owe and when
Most resellers only think about taxes in April and get hit with an underpayment penalty. Here's how quarterly estimated taxes actually work for eBay and reseller income in 2026, with real numbers.
AI tools for eBay resellers in 2026: what actually helps, and what's hype
A practical, no-hype look at where AI genuinely saves eBay resellers time in 2026 — listing copy, pricing research, photo cleanup, and bookkeeping — and where it's just a buzzword bolted onto an old tool.
How to use AI to write eBay listings that actually sell
A repeatable workflow for using AI to write eBay titles, item specifics, and descriptions that rank in search and convert — including the mistakes that get listings buried or get you a return.
The 1099-K threshold for resellers in 2026 — what actually changed
The 1099-K threshold rules shifted again for 2026. Here's the real number, what platforms are required to report, and the paperwork that quietly ruins your tax season if you ignore it.
How to avoid double-sales when cross-listing (the real fix)
Cross-listers promise auto-delist but fail when your computer sleeps, Chrome updates, or the marketplace pushes a UI change. Here's why, and how to actually stop double-sales.
Cost basis per item vs per lot — why your profit math is lying to you
Dividing a $140 lot evenly across 20 items is how most resellers end up with spreadsheet profit that doesn't match their bank account. Here's what real cost basis looks like.
Why resellers outgrow spreadsheets (and what to use instead)
A working spreadsheet is the first step. Losing track of 50 items is the second. Here's when to switch, and what breaks if you wait.
What you actually take home on eBay in 2026
Final value fee, promoted listings, shipping, insertion fees. A worked example on a $40 sale, and why sub-$20 items quietly lose you money.
Poshmark vs eBay: which actually pays more on a $40 sale?
Poshmark's 20% feels worse than eBay's 13%, but eBay adds shipping, per-order fees, and promoted listings. A side-by-side on the same item.
Your real profit margin is probably 12%, not 40%
COGS isn't just the price you paid. Mileage, supplies, shipping write-offs, returns, platform fees. Here's what's missing from most resellers' math.