"Vintage lamp" is unpriceable. "Stiffel brass table lamp, 1960s, original shade" prices fine. Look for maker's marks, labels, stamps, model numbers, and materials (sterling vs. silverplate changes everything). If you can't read a mark, search the distinctive features: the pattern name on the bottom of a dish, the joinery on a chair.
Search eBay, filter to sold listings, newest first. You're building a small dataset: 10–20 comps for the same item in the same condition. Note the low, the high, and where most sales cluster. Reject the junk comps: parts-only listings, bulk lots, and misidentified items. Full walkthrough on finding sold prices here.
Grade the item before you price it:
• Excellent: looks unused or near-new, all original parts
• Good: light wear, works perfectly, minor cosmetic flaws
• Fair: visible wear, small defects, everything functional
• Poor / parts: damage or missing pieces — price against parts-value comps only
If your item sits a grade below most of your comps, come down from the cluster — don't average your comp set with the better-condition listings. Honest grading also saves you from returns: overgrade in the listing, and the buyer will grade it for you, less politely.
Your asking price is not your profit. Before committing to a number, subtract:
• Marketplace fees (a percentage of the sale; varies by platform and category — check your platform's current fee table)
• Shipping you'll cover, or a discount you'll fund
• Packaging materials
• What you paid for the item
Run that math on your resale profit calculator before you list. An item that sells for $50 with $12 in fees, $9 shipping, and a $15 acquisition cost nets you $14 — not the $35 the listing price suggests. Knowing your true net changes which deals are worth buying in the first place.
| Tier | Where to price | When to use it |
|---|---|---|
| Fast sale | Lower edge of the sold range | You need space or cash now; item is common |
| Market rate | Middle of the sold cluster | Default for most items |
| Patient | Upper edge of the sold range | Rare piece, strong demand, you can wait |
Whatever tier you choose, list at a clean-looking price and leave room for one negotiation round. Re-check sold comps every couple of weeks if it isn't moving.
You find a vintage Pyrex mixing bowl set at a garage sale for $20. Sold comps for the same pattern in good condition cluster around $60–$85, with a few sets topping $100 in excellent shape. Yours is good, not excellent: market rate says $65. Subtract roughly $6 in marketplace fees, $12 for careful shipping of fragile glass, and $2 in packaging, against your $20 cost, and you're netting about $25 on the flip. That's a buy. If the comps had clustered at $40, the same math nets you nothing — and that's a walk-away, decided in five minutes instead of after the item sits unsold for a month.
The method above is what every successful reseller does — the constraint is doing it across a whole inventory. SellSmart AI photographs an item and returns a comp-anchored value range, condition read, and listing draft in about 15 seconds, so you can price a weekend's worth of sourcing in one sitting.
Price with real comps, in 15 seconds.
SellSmart AI appraises any item from a photo — from $4.99/week, cancel anytime.