GM Key is #88951932 - Retail $29.82 +tax
Note: (REPLACEMENT KEY MUST BE PROGRAMMED TO VEHICLE;SEE THEFT DETERENT SUB-SECTION OF SVC MANUAL) (MASTER KEY)
Most dealerships like the one I work at rent the very expensive computer controlled key cutting machines, we charge $10.00 to cut any key to pay for it. So tax and all $50.00 is about right, but know there are cheaper made keys, the metal is softer, and tends to bend or break easier if your cylinder binds. This is why the GM keys are higher, but its up to you, where you get it and how its done, just make sure you always have a spare. You don't want to have to tow the vehicle to a dealer to get a new key programmed if/when you lose all your keys.