Lets see, I have bought, in the last 20 days, MM3, Complete Arcane, Complete Adventurer, Dungeons of Doom, Green Ronins Witches and Psionics books, City State of the Invincible Overlord, a bunch of Bastion and FFG's $5.00 sales items (10 total), Goodmans Geomorph's, Kenzers City Maps, Castles and Crusades PH, others I am forgetting. I plan on buying the Conan RPG, Paranoia XP, Crystal Skull, Grimtooth's Wurst, Wilderlands Boxed set, the new FR Waterdeep (if it is comparable to the old boxed set), C&C DMG and MM books, plus at least a couple of their adventures, and GR's Hamunaptra setting. I recently saw Steve Jacksons card board castles, dungeons, etc.... and plan on getting them if I find them somewhere at a good discount. I have also been considering Dwarven Forge stuff for a long while now, so eventually I'll probably buy some sets. My D20/RPG books numbered 177 before I bought all the stuff I have mentioned. Not including anything from the 1E/2E era of gaming.
I did not buy any of the races or climate books, I don't intend to either.
So no, I am not burnt out.