Cheap supergun?

[zakk]

Ok, this isn't the normal question.

What's the cheapest supergun one can find? I'm not actually going to play any games on it; I'm just getting tired of having to use my cabs as a test benches when I do any PCB work.

I know I can build a quick job myself; just wondering if I can get something cheap enough to justify not wasting my time. Also, I know if I start building something, it'll just turn into me building a 'real' supergun and I'll go totally overboard...