I think I have just about $2,000 into it, but I also have a SRAM X9 setup (for running 1 x 9) with some 2.35 Maxxis High Rollers just sitting around included in that.

i have it at 28.8 lbs right now and it rides great at least at the local bmx race track(thats the only place i had a chance to ride it so far). i am planning on running a 1x9 this summer to race dual slalom at the world police and fire games in whistler and also maybe some 4x in the rocky mountain states cup.