What, no shopping malls in Mallorca!?
Yes, if you want to buy clothes, toys, handbags, suitcases, cosmetics, junk jewellery, food, contribute to AIDS charities etc.
But if you want photo-books, you're now pretty much on your own with your computer. Having been stung from the purchase of those shrink-wrapped copies that one can actually hold in the hand in a shop, buying unseen is a buy too far.
Buying by post is also a very expensive way of doing it - I sent a cousin a simple CD in its case and that cost me about six Euros from Spain to Scotland! For a CD! Imagine what you'd pay for Sumo. At around €90 off the shelf, I thought that dear enough when I bought it, my single contribution to the Newton Estate.
I also find that the best photography tomes seem to come from France or Germany, and here, unless there's a publisher's branch in the country, it get difficult/impossible on distribution grounds too. I'm sure it's different in Madrid or Barcelona, though.
(I suspect your concatenation of malls and culture-vacuums is not accidental...)