A good reasonibly priced full faced helmet brand would be SixSixOne ive got the new 2011 evo helmet and its pretty good they are a BMX helmet and you should be able to get one from a bike shop for $150-$180
bro, go into hi-side leathers....went in the other day and they got new redbull ones in for tree fitty, and the regular 2nd hand ones for 250$ as for helmets, go either 661, or if you want the full deal, go for a predator DH-6