The main issue always is the same. Determining beforehand whether a product is a finalized quality product or something that only looks like it because you have too few information before the purchase.
The Shopsy script (Etsy clone) is unfortunately the latter. After buying this clone script I first received an old version that was not even in near the demo site version. It took me 28 days to finally get a version that was without bugs and worth something.
After that it rapidly showed all shortcomings and remaining issues that are not handled correctly. It's not decently multilingual, it's not scalable, the deliverable is filled with polluted data, no versioning, no documentation, no roadmap, et cetera...
For non-developers it is pretty much impossible to deliver a working marketplace with this script. You cannot even configure key aspects.
Highly unprofessional deliverable and no support afterwards. Contacted the team (it says lifetime support...) and didn't get any replies whatsoever... Very poor experience for this kind of money.