If you are planning on picking up Dungeon Delve, and using Dungeon Tiles with it, be warned, the book uses the “Halls of the Giant Kings” set in 7 of the 30 delves. That set is currently out of print, and based on the prices it is fetching on Ebay it looks like it is going to be an expensive set to pick up.
The book also uses the “Dire Tombs” set, “Fane of the Forgotten Gods”, “Streets of Shadow” and the newly released “Caves of Carnage”.
Shame on you Wizards for releasing a book with an out-of-print Dungeon Tile set “needed” to use it. Bad form.