i was a bit late in buying it.... but i read it the same arfternoon i bought it
i could not put it down apart from quick trips for another glass of water, food or similar.
I got the third-last copy at the bookstore i got it from. a lot of other places were already sold out, so i had to pay more to get it from a book shop rather than a dept. store.
they were having a sale on the rest of the HP books, so i picked up most of the ones im missing (and had been borrowing from my aunt) in the grown-up black cover PB editions. they look awesome! i forgot to get order of the phoenix though *slaps forehead*. once i get that one my set is complete.