Hmmm....I sold (just last week) a piece of RISC OS software to a chap in the States. It was just a single floppy disk that I slipped into a small jiffy envelope so it really didn't weigh very much at all. I'd asked for 2 GBP postage and packaging for within the UK but when I realised the winning bidder was in the States I told him i'd have to hold off with the invoice and get the parcel delivery priced first. Royal Mail wanted (gasp) 1.70 GBP for air mail delivery of this parcel, so I got back to him with the great news that the final price was less than what i'd initially asked for! Apparently this is the "small parcel" service which seems very cheap!