Hey Carl, have you had a look at this site? I have bought about 30 books this year.... including fiction, scifi, medical and astronomy. Quite cheap and delivered to your door - FREE delivery 
http://www.bookdepository.com/category/1533/Astronomy-Space-and-Time
Hope ya feeling better 
Goodness, the books you bought would have me asleep in 2 seconds flat!! Astronomy for Dummies is my style - ah, which I bought from BookDepository.