First of all, it's all cash which really lowers the tax liability.

Secondly, I've seen raw cost numbers like $100 per pair. If you spend a couple of dollars on truck decals and brochures with phony reviews, maybe you're looking at $110 per pair, tops.

A few bucks for gas and you might sell two pairs in a day, maybe $600 per pair. That's a gross of over $300K per year for a couple of fast-talking high school drop-outs.

Not too shabby.