A Secondhand Comp Check Workflow Checklist
A useful comp check turns scattered listings into one defendable resale estimate before the buyer starts negotiating.
LOCALOPTIONAL
CLOUD
Three takeaways.
Keep the useful core visible and under the user's control.
Start with comparable items
Use sold listings when available, then active marketplace results for context. The closest comps should match category, brand, model, condition, bundle size, missing parts, local demand, and shipping or pickup reality. Asking prices can inform the conversation, but they should not become the resale estimate by themselves.
Start with sold and recently active comps.
Filter before doing the math
A clean comp check removes outliers, damaged-condition mismatches, unrealistic bundles, stale listings, and one-off prices that would distort the offer. The result should be a conservative resale value the buyer can explain to themselves before entering the calculator.
Remove outliers before choosing resale value.
Turn comps into an offer range
Lowball Lab can speed up the next step by applying fees, repairs, pickup time, shipping, risk buffer, and target profit to the confirmed resale number. It should still stay honest: the app opens focused checks and organizes local math, but the buyer confirms the comps and decides whether the seller context is worth pursuing.
Feed confirmed numbers into the offer range.
A useful comp check turns scattered listings into one defendable resale estimate before the buyer starts negotiating.