I will be putting new tires on the front. Getting prices from some local tire dealers. They all said to replace the TPMS because it has a 5 year battery life. Next year will make it 5 years. How long do the batteries last on the TPMS? I am looking at 90.00 each for the TPMS from the tire dealer. Any less expensive places to buy them?

Thanks

OldSalt