Goblins 1 Hint Book: http://www.sierragamers.com/uploads/24082/Hint_Book/Goblins_1_Hint_Book.pdf
Goblins 2 Hint Book: http://www.sierragamers.com/uploads/24082/Hint_Book/Goblins_2_Hint_Book.pdf
Wooddruff & Schniblle Hint book: http://www.sierragamers.com/uploads/24082/Hint_Book/Woodruff_and_the_Schnibble_Hint_Book.pdf
As for Goblins CD (sealed), your best bet is going to be online like ebay or something.