I would suggest that you don't use one supplier for your parts. I don't know about Brother's but I do know that $6.00 for a thermostat is high. Especially since you can buy one from the auto parts store that is only $3.00, and it is the exact same Stant thermostat that you would buy from an Oldsmobile supplier.

If you need a supplier for specific parts just ask around, there are alot of people here that have good connections.