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Came across this one on Ebay. I have no connection to the seller, it is the cheapest LS3 I've come across yet. BIN $15,950.
http://www.ebay.com/itm/Chevrolet-Corvette-Base-Coupe-2-Door-C6-Velocity-Yellow-Paddle-Shift-Automatic-2LT-dual-mode-NPP-/321579783930?forcerrptr=true&hash=item4adfa616fa&item=321579783930&pt=US_Cars_Trucks
Hope you were serious about the "higher miles" though, sitting at 274K.