I just had one cut in Atlanta. Took one day. Cost $35 for one key for my W116.
Odd thing, though. The counter guy said that you have to bring in the car to verify the VIN. If it won't run, you have to tow it in. I asked how could I have it towed if the steering and tranny were locked. I guess disconnect the driveshaft. He said that a parts guy could deliver the key and check the VIN for $100 when they had time and a spare employee.
He waived that requirement when he saw what car it was for. I guess 30 year-old models are not stolen that often.