To fuel my ever increasing spend on the Boden catalogue , I've decided to try & flog some of the baby items that I found quite useless e.g. posh change bag. The thing is, how do you work out the postage costs? Do people religiously go to the PO & get everything weighed, or do they guesstimate? The last thing I want to do is fleece people on costs, but finding the time to just have a cup of tea (or use MN) is enough without endless trips to the PO.