Wow, I didn't expect this sort of response! I appreciate it. I am aware of the supply and demand factors for out of print stuff, but just didn't think the demand was that high. I figured most would be going 4e and the people that don't like it would already have 3.x You live you learn.
In my younger days I'd just buy it all and be damned to the cost. But now I have a budget and want to get the most for what I spend. Or at least know that it'll keep getting played.
For now I will take the advice of using the SRD. I didn't know it had 3.5 stuff, since I thought that was copyrighted. I thought it was just Pathfinder material.
I only just played 4e this past Sunday and had read prior to that about it "being like WoW". I had an open mind, but was disillusioned quickly when our party didn't even get hit once due to all of the action point use, marking, etc. Plus I like the strategy of spell use when they're finite, rather than having "at will" and encounter based magic that replenishes. I can see the appeal, but it's just not for me.
Again, thanks for the input!