I added this to the Buy/Sell section of the starter guide on the forum, but I thought I'd post it here too.
I'm implementing a new system, where you can sell your parts/cars back to the dealership for half the price you bought it for. This only applys if you buy the part/car BRAND NEW. THIS DOES NOT APPLY WHEN BUYING PARTS/CARS FROM ANOTHER PERSON. For example, If I buy a 320hp SR20DET brand new, I can sell it back to the dealership/manufacture for $1,250 (Original cost was $2,500).
You can do this with as many parts as you want, as long as you bought them BRAND NEW.