Yes, I have tried this in the past but I think I finally found a really simple and fast online store for photographers who may not need a fancy custom store.
The store comes from Image Kind, which appears to be the same company that owns CafePress.
Setup is easy. You can login with your Flickr account and you can import your images directly from Flickr.
They have pricing options from free to under $99 a year. You pick your pricing and markup for the items you sell.
So go ahead and check out my store. And of course buy something: