Idk worrying about a lab leak type pathogen scenario through an ebay sale seems far fetched to me. I picked one that looked lightly used and clean and wiped it down with disinfectant when I got it. The chance of a pathogen surviving that long doesn't sound like a realistic concern. Most things it plausibly would have been exposed to, save for like highly radioactive dust getting lodged in its crevices, is easily handled with basic sanitation and hand washing. And it's not like I'm putting food on the surface anyways.

Yeah I think if I was gonna start using used lab equipment, a new autoclave would be my first purchase.