Depends on the vehicle and how BMW packages the option.I guess all the German mechanics will need to change their diagnoses for heated seat issues... "Did you remember to pony up your $18?"
One question, how nuch are heated seats in a BMW, or are they standard equipment for these fancy cars?
Example of the individual option prices.
BMW X5 - $350 for heated seats/steering wheel/armrest (all three together).
Other BMW Models - $500 for font seats, and $200 for steering wheel.