It would be way too easy to scam them. Pawnshops need to validate the quality of the item and determine if it’s legit. Most Pawnshops will also sell on ebay.

This is exactly what people said about eBay, no?

How can I put this. The clientele who are using eBay is not quite the same as Pawnshops. I’ve seen someone get off a city bus with a massive TV heading into the pawnshop. I doubt the person owned the TV and the pawnshop was known as a fence. It had a walk up after hours window that was open late. Although it’s much more common for homeless people to have phones these days than when I saw this occur. Junkies will find junk that’s for sure.

Shipping costs make this probably a bad idea.

You would have to do it as a social marketplace. You could post the items you want to pawn and local independent 'shops' could offer the item. Essentially, a reverse Craigslist with pawn dynamics backed by eBay style profiles and feedback.

That sounds like a good idea tbh.