I've just run through the magazine, and there isn't really an article that highlights value, other than the last paragraph of a Bob Roemer piece, which is mostly the same historical explaination we've all heard a million times:
"Between 1968-1977, BMW built 825,000 '02s; approximately 80,000 were sold in the United States. Rather than fade away, its cult-car status is firmly intact in the 21st Century. Fortune magazine's July 2001 cover story included the 2002 as one of the "10 Places to Put $10,000" because "the car is getting cooler even as it ages."
So now you need to the July 2001 Fortune. If you want to borrow the BMW magazine, email me your address and I'll mail it. I would like it back, though...
Also have you looked at 2002AD's cars for sale page? It has some seriously high prices listed, and if you keep going down the page, cars that have been sold still have the prices listed:
http://www.2002ad.com/pages/carsforsale.cfm