Thunder Stun Gun: 750,000 Volts for 13 US Bucks

You know, there are certain things you just shouldn't cheap out on—headphones, condoms, HDTVs, and I'm guessing stun guns. But since it's probably more of a risk for the guy you're zapping, why not? The Thunder Stun delivers 200,000-750,000 volts for just 13 US bucks. I'm sure it'll be fine, really. What could possibly go horribly, horribly wrong? [Surplus Computers via Gear Diary]