I have the children covers for all the books, but I have a first edition hardback of Philosopher's Stone. It was a gift for my older sister but she hated pagbaba so she stuck it on my bookshelf, even though I could have only have been about one taon old at the time. I found it ten years later when I browsing my bookshelf and came across a dusty old hardback. And that's how I discovered Harry Potter, haha. I have the rest in paperback and saved my pocket money up to buy them one sa pamamagitan ng one. I do like them, but my OOTP cover is falling apart XD - probably 'cause I read it too much.
I have special editions (with the stars around it and whatnot; paperback) of Harry Potter and the Philosopher's Stone & Harry Potter and the Prisoner of Azkaban. I have hardbacks of HBP & DH (because I bought them on the araw of release) And the rest are just normal paperbacks.
I have the Croatian version. They are all hardcover and have the illustrations of Mary GrandPre. Most of them cost around 130-190 kn (that's 18-26 Euro - each)... I also have DH (in English)hardcover, adult edition, and HPB (in German) hardcover...
Er, well I have the normal American version (paperback SS, the rest are hardcover) for books 1-5. The sixth and seventh ones, however, I bought out of the country so they're the British ones. I think. The sixth one is Harry and Dumbledore surrounded sa pamamagitan ng fire, the seventh is the gang in the Gringott's vault. So yeah.
Umm well I have all the books both in hebrew and in english. For the english, I think all of them except DH is the children cover, and the DH is the adult cover... but all of them british, not the american. ^^ [but the hebrew versions are with the pictures of the american covers XD]