Fantasy Epic

Are David and Leigh Eddings famous? I remember reading their book a long time ago (when I was a teenager?), and loving it very much. Specifically, The Redemption of Althalus.

I barely remember the character's names, or the ending, but I remember loving the hell out of this. I cannot justify buying it for myself because I'm still a broke student on a tight budget. But it's on the re-reading list.