Sounds to me like making it into a Humble Mobile Bundle would be a good way to go - your product needs to be of a certain level of quality, sure, but when you make it it's a some cash money and a very decent chunk of publicity.
Although in general when you are at a certain level of quality it probably matters a little less - then your game is good to go on multiple platforms, etc. If you just make a "tappy turd" and expect the money to come knocking then failure is predetermined in there somewhere.
Android's problem is, probably, the huge amount of junk hardware that's distributed among those unable (kids) and/or unwilling (those with the super-budget devices) to ever pay for anything. Apple, with their goofy pricing has already established itself as the product for a slightly different range of customer thus, obviously, purchases are more likely.
Still, among the billion Android devices there have to be some users willing to use/buy your product... if it's good enough.