TST TPMS 507 System and valve stem Question

mikenannie...coincidentally I ordered my TST507 system today as well, will have it Wednesday or Thursday. We'll be leaving (hopefully) Sunday or Monday for a 1,400 mile round trip to Arkansas and I wanted it up and running by then. Currently have rubber stems, I plan on switching to metal ones after we get back. The local Goodyear-related tire service center who I always do business with for repairs and mountings quoted me $5.00 per tire to dismount it from the rim and $5.00 for each metal stem + tax...that's if I bring the tires/rims into them. SO...less than $50 for the four tires.
Regards, BGood