MAP (minimum advertised price). Dealers are NOT allowed to advertise prices lower than a certain amount even though they may sell it for less. So if you really want the best price you'll need to call or e-mail them; don't rely on the web-site prices.
With that said, check out
Fields Hobby Send them an e-mail asking their prices and shipping costs. They were the lowest when I was shopping for servos last month.
Here are a couple more that were competitive:
http://www.dougshobby.com/
http://www.donalds-hobby.com/
HTH,
C.P.