Hm, opinons.
I dont think that you will sell your engine that fast due to the fact that the market is full with 100er engines at a resonable prices.
The other point is that you´re try to sell your engine to germany, and at the moment there were other wankel engine in germany with the same power but lower weight, like the XR-8, Aixro XR 50 e.g.
Are there any accessories like carburetor etc? Give some more information