5d Mark ii shutter replacement for $249. Anybody use this service?

http://www.ebay.com/itm/CANON-EOS-5D-MARK-II-SHUTTER-UNIT-REPLACEMENT-SERVICE-/390226110968

Any body use Pro Camera Repair in San Diego to replace their 5d Mark ii shutter? They are advertising doing it for $249 on Ebay. Is this another "It's too good to be true and you get what you pay for"? Also, does anybody have recent info about what Canon charges to do it?  Thanks!!