buy.com has both the 360 and PS3 version of Rock Band with everything for $160 with free shipping. Its only $10 off but for those who are without a Sam's Club this is about as good as it gets.
http://www.buy.com/retail/product.asp?sku=205124135
http://www.buy.com/retail/product.asp?sku=205107503&loc=108
First link is PS3, second is 360.
http://www.buy.com/retail/product.asp?sku=205124135
http://www.buy.com/retail/product.asp?sku=205107503&loc=108
First link is PS3, second is 360.