Depending on what you want to ship also look at Swiss Post. Sending things like books, etc, by economy post is slower, but cheaper so if you don't need them immediately a few days' (or weeks depending on where you're moving to) delay isn't a problem. We did this on holiday in the States a few years ago. Sent back books and some clothing using US Post economy parcel service which meant it arrived 2-3 weeks after we got home. The likes of UPS/DHL, etc, wanted to charge $100 more to essentially take the package down to the nearest Post office and send it from there.