I sold a cardigan on eBay for £20, Buyer didn't pay after a week so opened NPB case, a few days later she pays, late on a saturday afternoon.
I sent the item 1st class on Monday morning, I charged £2.60 for P&P (came to £2.40), today I see my P&P star has been demoted to 4.7 when before it was 4.9! Now I know I don't know for sure it was her but I am guessing it is.
If it is her, AIBU to think that she is being a bit picky over 20p? It wasn't just the postage I bought the posting bags too obviously.