Discount offered a TPMS rebuild for $32 and they reset them of course if you were having them swap your winter tires onto the OEM rims or steelies.
When I bought my new wheels I wanted new TPMS also since I wanted to sell the OEM 16"s with the original TPMS (a better deal for the buyer) and the in-store price was pretty crazy for new units but when I priced them on their website they were much cheaper and I got the store to match the on-line price which saved me over $300 on the whole package but alot of that savings was from the cheaper priced TPMS.
Also check around for places that might reset your TPMS cheaply but I do know the Discount Tire locally has done them for free for just drop-in customers just like they fix flats for free even if you didn't buy the tires from them.
'12 Focus Red Candy SE Sport 5 spd
'99 Toyota 4Runner Sport
'11 Subaru WRX STI Hatch