I don't know how REI's normal prices compare, but they have a 15%=off sale on bikes (http://www.rei.com/category/4500003_Bicycles") until the 30th.

They're also have a "20%-off one item" coupon until the 30th. You must be a member to take advantage of the sale (costs $20 for a lifetime membership), and the 20% doesn't apply to items already on sale.