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.
Every reseller starts with a spreadsheet. It's free, it's flexible, and for the first hundred items it works fine. You log cost, sale price, shipping, and the arithmetic is honest.
Then you hit somewhere between 200 and 500 items and the spreadsheet starts quietly breaking.
The failure modes
Double-listing. You sold something on eBay but forgot to delist it on Poshmark. The buyer on Poshmark gets a refund and a bad review.
Lost cost basis. You bought a lot of 20 items for $140. Your spreadsheet has one "cost" column so you divide evenly — $7 each — even though half the lot is junk. Your reported profit is wrong. Your taxes are wrong.
No location tracking. A buyer asks "can you ship tomorrow?" You say yes. You spend 40 minutes searching four storage bins. The spreadsheet doesn't know which bin anything is in.
Manual status tracking. An item sells, you update the spreadsheet. Sometimes. Some weeks you forget.
What a real inventory tool gives you
- One source of truth. Sold on one platform, delisted everywhere else
- automatically.
- Cost basis per item, not per lot. Your reported profit is the honest
- profit.
- Location search. Type a barcode or SKU, see exactly which shelf it's on.
- Automatic status updates. Orders flow in from eBay/Etsy and items flip
- to "sold" without you touching anything.
When to switch
If you answer yes to any of these, the spreadsheet is costing you more than it's saving you:
- You've double-sold an item in the last 90 days
- You can't find an item within 2 minutes of a buyer asking
- You've lost track of what an item cost to buy
- You spend >30 minutes a week on inventory admin
PalmFlow is built for exactly this moment. Free plan, 50 items, no credit card.
Published by PalmFlow. We build inventory software for resellers.
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