Wow. I just can't imagine wanting a 1/64 that bad and I love collcting them. I paid $50.00 for a Dave Marcis custom, $30 last month for a #18 Greg Sacks Ultra Slim (where I've been told several times there are less than 100 ever produced). I've paid $20 maybe 5 times over the years.
This actually IS the most expensive diecast. I've seen sealed ones sell over $400. More than once.
I didn't think I'd ever get one, but I nabbed a low quality one on Ebay last year. Good enough, the body is really nasty and not an accurate replica of any real Ford anyway, so I'm not going to spend that kind of money for an inaccurate car.