Thanks for the tip. I already track condition on every sale, and people can filter by it. But I don't show the prices side by side in one result yet, however I agree that's what a thrift store would want.
You're right that resale tools helps the buyer more than the seller. These sold prices are already public on Poshmark. The people who benefit from hiding them are the ones lowballing. Also, the free price guide helps sellers see what their stuff is really worth.