I love stories like this, as they can be Illuminating, and I'm curious for more answers.
1. profitable? Is it your day job or Side job or a "lifestyle business", Pays for my beer...
2. I would love a number next to cheap ($5? $20)
3. Where are you located, and is that the market your serving.
Because I live around Silicon Valley, my perception of what your saying might be really different from what it actually is... is cheep $20 a month, or is it $5?