I was in urgent need of replacing all four sensors on my 2011 Nissan Sentra. I went to many stores to find out the price and the average was $100 per tire. No thank you! I decided to buy the parts myself and pay a local tire shop to install them. The mechanic was shocked to learn that I paid $80 for all four sensors and they were pre-programmed to make pairing the system quick and easy. My shop charged me $10 per tire for installation and balancing, so I paid about $125 total for new TMPS sensors plus labor and was up and running in about an hour. Spasmodically better than $400 and they work great. They do not go out even at low temperatures. Highly recommended!