You can't make any money collecting new books! Huh?

Oh I beg to differ. You can make a huge profit on new and newer books. Harry Potter 1st editions are currently fetching in the high hundreds and even higher. Stephen King (you've heard of him) first editions will continue to climb. Here's an example on eBay right now. Not even in particularly good condition, this 1982 Dark Tower, The Gunslinger hard cover is currently selling for $330 with 41 bids. They can easily sell for $750 in good condition. 

So start the hunt through the bookshelves. You may have a hidden gem. 

http://www.ebay.com/itm/321296911372