I've been an eBay member since the beginning. Like 30 years. I can say without hesitation that every year they get a little bit more... "annoying."
I had a million dollar revenue business on eBay and they booted me for idiotic reasons. 99.7% feedback, full time customer service reps, returns free, paid them $300k+ a year in fees. Some punk kid rep pushed a button for an arbitrary infraction and it was all gone. Took it all the way to the eBay president's office and no dice. Stupid company, **** them all.
Damn. I would feel the same way in your shoes. I hope our lifetime something bigger and better comes along (and that they don't quickly ruin a good thing too).
Mercari.com and shopgoodwill.com are decent. I try to use them or really any other source before I shop on eBay.