Hyperion Omnibus – How much to pay for it? Help and opinions

Hello, everyone. I have always heard that Hyperion is an awesome book. Sadly I can’t find it in my mother language (spanish), that’s why I saw this Omnibus edition from Gollancz (Hyperion and Fall of Hyperion) but I have a doubt with the price I should pay. ISBN: 9780575076266

Right now it’s about $30, is it a good price?

Also, how difficult is the english used in the book?

Thanks a lot!