First off let me start by saying DO NOT buy from these sellers, they are con artists trying to make a quick buck. You can buy this same set from Amazon.co.uk and even with expedited shipping it is less than half of this price.
Now on to the books themselves; They are extremely beautiful books. Cloth bound with gilt edges and ribbon bookmarks. The books seem very sturdy and have nice pages, they aren't as thick as the pages on the american editions, but are not by any means cheap.
The only real differences between these editions and the american editions are the covers and just a few words that are slightly changed here and there, also these editions do not have chapter art work.
I would recommend these books to any die hard Harry potter fans and collectors, not everyone will appreciate them. Overall I love them and am very glad that I purchased them 5 star value for sure!!