I've been dreaming about another vehicle to replace the X5 I drive... I hadn't realized that the prices have tanked and these are going for the same prices as E46s of the same vintage! I've even seen a few with nice bodies. I don't care much about the mechanicals, since some X5's are worth more in parts than as a whole.
See this example:
https://newjersey.craigslist.org/cto/6029471923.html
If I was in a better position, I'd surely buy it. An aero kit has to be able to fetch at least $800. The rest of it can easily get you the last $200.