No Way!!
Take a look at the Carmax site. There are two 01 X5s in their inventory.
3.0 with 89K mi. for 21,998
4.4 with 76K mi. for 23,998

I sold several cars to Carmax and they marked them up about 4K for resale. If your X5 is in good condition you could get 19K cash just selling to them.

Tell the dealer