A/B Testing Product or User Split

I work for a company that sells unique items online (think collectibles or artwork in an eBay style auction). We have a data model that can tell if the item is ‘attractive’, meaning the seller has a reasonable reserve and users can potentially get it for a good deal.

If I want to do A/B test on this to see if this ‘attractive’ indication makes those items sell at a higher rate, how would you design the test? Would you: …

a/b testing artwork b testing data data model datascience deal ebay good meaning product testing think work