My 2 cents worth: this is infact a rare 2275xxx light weight. With BMW's lack of details regarding production specifics, this one still (seems) has its original 'factory' light weight tell tale signs like, fixed rear plexiglass, thin gauge windshield (this is very rare since those w'shields aren't available and long gone replaced by those who had them). Non power steering, no interior hood locking mechanism. True lightweight (like the early carb CSL's)! BUT, to get it to the condition it should be, floor boards, doors bubbling up, patch work in the trunk (and where else) complete paint job and and and........ SO YES, at 150 thousand, it is almost 50% more than it should (have) be. There is a lot of work out there to do. And that price vs condition is only because it's a CSL in spite of being the least valuable of the 4 series CSL's built. This one will also have to be completely taken apart and the rest, work vs price is 'repeated and proven history'! Either way the buyer will end up with an expensive restoration. I'm guessing that fact was a major turn off for the buyers who were interested when this car was first offered here. At that total price, it would be for collectors, to restore and store!
I'm afraid that (new) CSL's ownership is growing into another financial sphere!