This isn't an ad, but it might sound kinda like one... My hubby and I are kinda low on cash, so it behooves us to seek out the best deal on pricey bikestuff we can. We support our local LBS as much as we can, but some things are just too pricey to try to buy there on our budget... the best technique we've come up with is researching www.mtbr.com for the best gear, then looking for it on pricepoint.com to see if we can get a good deal... it looks like next paycheck we might both be able to outfit our bikes with disc brakes for $326 odd dollars... (avid ball bearing)
Thought I'd just share the knowledge.