That's disappointing to hear, I always thought the costs of ozrunways subscription was mainly based on the maps since everything else is freely available online although I can see there might be a small copy right fee for the pubs I didn't think it would be much.
NAIPS on the other hand shouldn't cost anything; you would almost be doing AsA a favour since there is a large gab in the market (naips on android) that AsA don't want to service themselves.
It's also interesting that ozrunways is able to release an app for only $10 a year if the fee's are that much. He doesn't indicate that at all when he makes references to what it would take for other people to make one for android, maybe you are speaking to the wrong people and Shagpile could point you in the right direction,
NAIPS for ANDROID - xda-developers
p.s I don't know how good the dial a wiz app is as an indicator of sales, naips would be much more popular however I could see it taking a month or 2 for word to get around and it to pick up