Yes, about the wife....she knows. The cost and estimated shipping. As for how many....well that is entirely a whole seperate bucket of photons...but she does appreciate the shows and how much time and devotion goes into creating a working projector system. She has her own expensive hobby...photography...lenses,filters,data cards, etc, etc. If you think that lasers are expensive...go buy a new set of magneto's for an airplane....$1895.00 with spark plug harnesses. Tires and fuel are cheap.