Are the valve stems on your new wheels mostly rubber or metal? OEM sensors have metal stems.
I don't know why they would charge you for valve stems if they re-used your TPMS sensors.
All the tires on the ground have TPMS sensors and the valve stems are metal I thought maybe the 5th/spare (that one does not have a TPMS sensor) was put on instead of a TPMS wheel.
I reached out to Dan at Wheeler's too to see what they have experienced based on feedback on these rims and he got back to me pretty quickly:
"I am not sure what the issue is. We have had a lot of customers use their
factory TPMS Sensors with great results. It could be that they need to be
re-set, but I don't have firsthand experience with them."
I will be heading to the tire shop in about an hour after work and will check back in.