For the center hub, I just bought grey caps from Tesla for $5 each. They're a tad lighter than the wheels but close enough for the time being. Tesla does make a black cap for the model X 22's but the wheels are on back order so the center caps aren't avail for purchase. The shop charged me $145 per wheel which included removing and re-balancing the tires, removing and replacing the TPM sensors, etc. This is the high side of average for LA but Kevin who runs the shop happened to have a set of Tesla rims on hand which he loaned me while the work was being done which allowed me to keep the car which was awesome. Work took about 5 days.