I dunno who this Jeff y’all are on about is… but as a long time user of Ebay (5 years) and a major international purchaser, after several really poor sellers, I started to change the way I do business on Ebay.
A small tip (please forgive me if I’m teaching grandma to suck eggs), what I now do is this. If the seller is shipping from abroad (it usually says so in the auction text) I always mail the seller after the auction is over. I won’t make the payment until I have heard from them in response and I tell them that I won’t pay until I have full combined postage / shipping details.
If they don’t reply quickly they don’t get their money quickly. I’ve only ever once had one seller leave malicious feedback for me - this was because I left them bad feedback. They had misrepresented what they had sold majorly, and after two weeks of fighting to get a refund (and a call from my local police station to her) she finally refunded.
Wait until they invoice you, or better yet use the “request total from seller” option before you pay.