Yes, Amazon does add tax to their items, but it is included in the price.
All digital content excluding ebooks have 15% VAT added, whereas the ebooks, as of January 1st 2012, have 3% VAT added. All physical items add 14% VAT.
BTW, you can also claim back on this tax.
Well tell me who didn't see this coming they might as well tax the air we breath lol.