You can get fully loaded 2008 e92 M3's for under $50k. I had mine up for sale about a month ago and I was only able to get buyers at $47k. I have pretty much every option except 19" wheels and DCT (mine is a 6-speed) and it's a one owner very well taken of car with 17k miles. Decided to keep it another 1.5-2 yrs and then get into something else. I think you did pay a bit much for yours; probably $5-6k too much. But as long as you're happy then that is what counts! I bought mine when it first came out and got $1500 off msrp. About 3-4 months later people were getting $6-8k off mrsp.