I think it is nearly a copy of the google market licensing so maybe Erel could modify the code of the google license library to support AndroidPit Market.
In germany this market is very popular.
I created a library for AndroidPit App Licensing. The problem is that it doesn't work.
In my opinion it is the fault of the AndroidPit App which makes the license check. It produces a NetworkOnMainThread Exception.
I asked in the AndroidPit forum if someone else has the same problem.