Get cheap D&D books while you can
D&D3E books can stil be useful
All the sourcebooks that deal with non-mechanic issues – like the great cityscape book that helps you add flavour to your urban D&D setting – will still be useful when 4e is released in 2008. Just check Amazon or Ebay for cheap deals. I saw some ridiculously low prices for used, and even new books.
I scored the 3 leather-bound 3rd edition core rulebooks for under 20$ each from Amazon. They look amazing. Even though I’ll be using them for less than a year I am pretty sure they’ll occupy a prominent place in my gaming library. The Amazon pictures aren’t good so I decided to show my D&D bling: