you can buy online the heated seats package, hey are 100 bux a seat, and install should be easy.
thing w leather seats is they are cold for the 1st minute, or not even, and then they are fine.
i went trough chicago winter w/o heated seats just fine, or PSM, or winter tires, or traction control of any kind, or xenons, hehehe.... fun times, i miss the snow (dare i say?)
buy the car, you will love it
---and then post some pics