eBay is a joke and has been for some years now. I used to sell records, computer games and DVDs on there years ago as a bit of a hobby, until eBays management changed and they brought in loads of changes geared to pushing smaller amateur sellers off the site with the aim of bringing in corporate sellers.
Fees increased, sellers could no longer leave negative feedback for buyers who didn’t pay (which in turn opened the floodgates for all the fraud issues on there now), forced postage prices, taking a fee on postage (which combined with the previous one meant that you actually lost money with every item posted) and my personal pet hate, forcing you to accept Paypal.
The two-way feedback system of the original eBay kept a lot of the idiots away because sellers could leave feedback for non-paying bidders. You could even be banned from the site for non-payment / not shipping items.
I’ve kept my account open as I occasionally buy bike parts but I wouldn’t dream of selling on there any more.