My purchases of d20 stuff in general, especially D&D in particular, has choked off to a trickle since this time last year. I've simply too much D&D 3.x material on the shelf that has never seen use at the table to continue to buy more, in either print or pdf format. Combine that with the fact that I'm pretty much done DMing 3.x beyond the occasional stand-alone adventure, and I think you can do the math. If anything, I'm likely to continue to purchase Goodman's DCC series for an occasional night or 3 of running 3.5, anf the Thieve's World stuff from GR.
Now, I'm still interested in some d20 games, notably Conan d20, and I will be giving C&C a good look when the core three books are completed and released, but in general, yeah. I'll never buy d20 products in the quantity I did 2+ years ago.