Umm, what? Maybe I didn't make myself clear. I'm saying that if it costs a considerable amount more than the value or equal to the value of the vehicle, then it's not worth it in my opinion. My example was such that a vehicle, who's resale value at the time is at $18k, a $2000 retrofit is far less of a porpotional figure than if someone with a vehicle worth ~$2000.
I should add that unless your sickly inlove with your car, it could behoove you to consider selling ur auto and getting a manual car. Then again, if you've had the car for a while and know all about it's troubles or lack there of, you may be hesitent to go for one that you know nothing about.