Maybe they'll price match, but I don't see why any bike shop should come off its price until you're offering them something. You're a repeat customer, you're buying a ton of extra stuff, you're buying a pair of bikes, etc. You're more likely to get them to throw in a jersey or something than move off the price. From what I understand, shops make most of their money on accessories and not bikes. There's not very much wiggle room on popular models.