He promptly left me "positive" feedback that read "WARNING Buys then complains about posting .which was stated and never changed"
A: I never complained about the postage.
B: I never asked him to change it, I simply pointed out he'd sell more if he didn't charge £4 per item for multiple items.
I'd be more upset, but it told me to add him to the list of vendors I will never use again, and people I will never sell to, and in any case eBay don't stop you from deleting positive feedback; it ought to go in 24 hours, and I get to keep the rating, it's just the comment that disappears.