I sell on eBay. Craigslist used to be great, but FB Marketplace has kind of killed it a bit. However, FB Marketplace is one place I'll never buy or sell. You have to register and log in just to view the item? Then use their app to communicate? Ebay is similar, I get that, but it's not much different than being an actual business and registering for a credit card terminal to do business. Some things you can't avoid if you want to buy or sell like a business. Ebay is not a social media site. FB is a social media site that ties in a bunch of your info and history to, I'm not part of that. If you think eBay is greedy, you should dig deeper into Meta.....
Craigslist was the best, and it's truly unfortunate that we gave up that for Zuckerberg's empire to control all things on the internet. CL didn't require you to register, didn't require an app to communicate, didn't require you to sign in to view things, didn't require personal data to verify and create an account. You could use your phone number, your email address, and they even automatically made them anonymous if you wanted.