Can anyone post a link to a reasonably priced set of 4 TPMS Valve Stems sensors for a 2020 CX5 touring. Need them for inter rims (got OE Mazda rims but didn’t come with sensor).

 

I would stick with Mazda OEM.
Though I have not had to do the Mazda yet, I've had some issues getting aftermarket OEM to work with some vehicles systems.
There are also several different types/formats of TPMS sensors which compounds finding replacement units.

 

Concerning TPMS, monitors. When we got our 2020, I bought extra rims, and monitors, from Mazda. I took them to Costco, where I got my new snowtires. They could not get them to work, and suggested I go back to Mazda, to see if something needed to be reset. When I got there, I showed the parts manager, my receipt. He said that they had sold me the wrong ones. The ones I had, would not work on 2020's They switched them for me, as it was there mistake.. Make sure to get the right ones!