Posted various items I've sold on ebay today. One was a book (which I started selling before you weren't allowed to charge P&P on books ) and as I was checking through I realised that I'd overcharged postage on it, due to not realising it would be able to be a large letter.
I have got in touch with the person and issued a partial refund as actual postage was 76p and I charged her £2.50 .
But was just wondering how much other people would "overcharge" and what amount buyers would be "happy" with. I also undercharged on a couple which is a little annoying but hey-ho