Buy it or not?

I have an automatic 2004 325i with about 52k miles on it. I've lived in SC and GA, and never had any problems with the cooling. Just recently, my transmission started to go (odd for such low mileage I would think). I also have an airbag light on and BMW wants to replace it for $1500. The only other (minor) issue I had was that I needed to replace the insulation pad under the hood bc it was falling apart but I think that's pretty standard for a car this age. PS. BMWs are very expensive to fix. I recommend only buying/leasing them under warranty unless you buy extended coverage. (ie. replacement transmission is probably going to cost me a nice $3-5k at least).

I bought mine with 3 miles on it and now have 140k. replaced a window motor, and now power steering pump but overall amazing car