Hi Tara,
I bought a couple of canvas prints from globalgallery.com, based in the U.S. They have a large selection to choose from. Their prices are very good, even more so now considering the weakness of the dollar. They also seem to have 20-30%-off sales every month or two. The only drawback is that depending on the size, the cost of shipping to Ireland can be almost the same price as the prints themselves. PM me if you need any more information.
Andy
P.S. I have no affiliation with globalgallery.