Thanks Verbal,
I like their premium option only because you can really customize your shop, and there are a few items that they limit to premium shop owners. Plus you can sell multiples of a single item with different designs on them.
They also have a good shop owners forum where you can get all sorts of advice.
A good tip:
If you sign up for a free account, you can do so several times and then list all your shops in one URL like so:
http://www.cafepress.com/shopID01,shopIDo2,shopID03 - and so on.
This way all the items of each shop will all show up on one page.
Ok, I babbled on enough - lol!
Best of luck!
Bill