About 9 months. But our only costs are an Apple Developer License, and a Business license for the LLC. We're not considering our time to be paid, since we have day jobs. http://gif-wallet.com
We can almost split a top ramen a day (assuming 4 for a dollar).
If you take a Taco Bell hot sauce and put it on Top Ramen, it tastes exactly like poverty.
There's very little chance of that happening, but we aren't rushing in to buy a bunch of touchbar macbook pros to replace our existing machines either.