I believe many sellers an eBay are illegally manipulating the market, and eBay is tacitly helping them by ignoring and removing feedback.

For example this seller: https://www.ebay.com/str/disctechllc

“Accidentally miss-priced” a bunch of drives, and then instead of canceling the orders, refunded everyone, but still shipped packages: https://forums.servethehome.com/index.php?threads/enterprise...

I believe they intentionally did this, causing people huge import fees in some cases, in order to not remove the “26” sold on their listings that are now astronomically priced: https://ebay.us/m/mGRdiT

Edit: They also lied on their customs declarations (!)