After I read your post I re-read the Forum rules. While I would be upset if I got a PM after posting a reply about a particular thread, I didn't see anything prohibiting a PM from a commercial enterprise. Maybe I missed it but it would seem the Forum Rukes would need to include this also.
I am disappointed, I have a TST TPMS, partly because of the recommendations on this forum. They have always giving me ecellent service. I would hope this isn't their policy to PM members to try to sell them one of their products.