Thats just insane. One buddy sold his M3/4/5 1998 for 8k because he needed cash. 80k miles and SUPER MINT! Daytona on dove. Another buddy sold his 99k E36/4/5 for 8400. They bought them for way less. Deals are out there. I bought 3 M3s and I spent 8500 on all them together. 95 m3 for 3k w/120k 98 m3/4 for 2k with 120k 99 M3 vert for 3500 with 200k. I love the M3 vert and still own it. Very clean and its dakar yellow.
With 18k you can buy 4 nice E36 m3s.