Looks like you can get the first edition for ~$20 on Ebay and ThriftBooks. Not sure if that's still out of your price range, but it's an option if it is. Books

Looks like you can get the first edition for ~$20 on Ebay and ThriftBooks. Not sure if that's still out of your price range, but it's an option if it is. Books are a lot like cars in terms of deprecation in my experience. Not always, but you can usually get a nice big discount buying used. Not as much with software books, but still a decent discount.