And we are drummers for almost the same kinds of wares!
Anyway I noticed you sell specialy voltage testers. My firm represents a company that carries parts and supplies for such testers, and even refurbishes old ones for eventual sale in the Damark catalog! Sounds like it might be great for your application.
Glad to hear you make $200 an hour sitting wherever it is you sit. Imagine how much more you could make if you started to move around a bit!