If true, this NBR story explains a lot about bike store behavior. According to the report, high end bikes account for only 15% of unit sales at bikes stores but 52% of the dollar sales. Commuter cyclists, those non-ELITE riders who ride normal bikes with normal components frequently lament going into bike shops and getting ignored - or receiving the hard-sell tactics from salemen who insist they need to by a new expensive bike. I have heard rumor of one LBS that has hired a specialist to attempt to train the sales force to actually listen to what the customer wants (how novel!).
I bought my last bike used from Phoenix Bikes and the bike before that off of Craigslist.