I can never understand why these places have such high shipping costs. I run an eBay store and have shipped game artwork before. It only costs like $1.50. Also, not to be rude by why would I ever pay for a printout?
Because there are a LOT of people who like to rip other people off. That is the ONLY reason for having high shipping prices. (with the possible exception of not having access to boxes other than flat rate shipping boxes but even that is unlikely)
There are a lot of consumers out there who will see a low price on a good idem and think they are getting a great deal despite being charged 3X more shipping than they should.