Depending on what it is I'd buy out of someones car or truck for sure! I'm a cheap bitch and would do almost anything to save a few pennies or dollars. I'm also a smoker and drinker and if I could get my Cigs and Booze at a discounted rate I would go for it in a New York Second!
It's bad enough that I have to pay tax on smokes and drive to Delaware to save $8 on each carton of them that I pick up. I pick up my beer there as well but with the price of gas these days if I saw someone that was locally selling black market stuff like this I'd jump at the chance to grab it!