Ah, I saw something akin to this in like 2012 (but I guess the Ship of Theseus was a change in username only) when I used to buy WoW gold on eBay (yeah, I know..). At one point the seller quit selling WoW gold, changed their name, and started selling sunglasses.
Haha, I'll admit I did this with several accounts. It was even possible to build up a good feedback by buying cheap stuff. Then start to sell whatever you want.
Easy way to avoid the ridiculous holds on funds and limited PayPal accounts due to "not enough feedback".