How to Check Sold Comps Before You Buy a Thrift Find

A thrift-store price tag and a high online asking price don’t automatically mean you’ve found a profitable item. A listing that hasn’t sold only tells you what someone hopes to receive. Completed sales of genuinely comparable items are a more useful starting point.

Match the exact item

Search the marketplace where you expect to sell. Compare manufacturer, model, edition, size, accessories, completeness and condition. A sealed game, a loose game cartridge and a game missing its manual should not be treated as identical. The same principle applies to first printings, cassette variants, designer labels and vintage electronics.

• Identification: check model numbers, ISBNs, dates, signatures and other distinguishing details.
• Condition: compare tested and untested, new and used, complete and incomplete.
• Timing: favor recent sales because demand and availability change.
• Shipping: factor in whether the buyer paid shipping or it was included.
• Volume: several comparable sales make a stronger case than one exceptional result.

Check demand, not just price

An item may have sold for an attractive amount once and still sit unsold for months. Compare recent sold results with similar active listings to get a rough sense of competition. These counts are imperfect: different sellers relist, bundle items and use inconsistent titles. Treat them as clues, not a guaranteed sell-through rate.

Calculate before purchasing

Start with a conservative expected sale price. Subtract the cost of the item, selling fees, actual postage, packaging supplies and any likely cleaning or repair costs. Ask what is left for your time, storage and risk. For example, a hypothetical $40 sale with a $7 purchase cost, $8 shipping, $5 in fees and $2 in packing expenses leaves $18 before taxes, returns, overhead and labor.

Know when to walk away

Passing on an unidentified, damaged, oversized or slow-moving item can be the smart choice. A confident buy usually has clear identification, honest condition information, a plausible price range and enough remaining margin to justify the work.

Next, check our Learn to Resell section for a sourcing checklist and more realistic ways to research finds.