109 chassis made i believe (clinic car and hitasuma (sp?) car)
as for the prototype question, i actually don't know how much he paid off hand, although i have the number 1.4 in my head for some reason, i could be way off tho. I don't think that prototypes would be cheaper. XP4 would be the only prototype sold (xp1 crashed, xp2 was wrecked in crash testing and xp3 was totalled by bernd peichstreider (sp?), former bmw president i believe). If anything, it would be more, altho it is up to production spec now i believe, altho i think tvrfreak may know a bit more about it than me

.