I'm confused, do you still have both sets of wheels and tires? If so, just swap the sensors. Otherwise new sensors are $69 each.
I'm not sure how Dodge's TPMS system works but on my wife's GMC Yukon if you swapped out sensors there was a procedure for the system to recognize the new sensors. We bought new sensors for her new wheels so we could swap back to the stock tires and I had to put it into a programming mode (can't remember how) then go to each tire and drop the pressure one at a time until the horn chirped. Kind of a pain but easier than swapping sensors if the Dodge system is similar to GM's.