Yeah, this is a very real problem, and I've experienced both sides of it as a customer and running an ecom biz. It's very difficult to spot some of these people ahead of time.

It makes me sad. Ebay two decades ago was a lot different. I never got burned back then, and did a fair bit of buying and selling snowboard gear, including boards that get up to around $800 each. There's absolutely no way I'd do that today. Just impossible not to get ripped off on it.