As X-Plane does you could do the same approach, provide a beta Demo for 15 minutes for a selected area California for example.
People who didn't bought it caus of the high price maybe, get now back to you again because they have the possibility trying the demo and feel the sim for them selves for a few minutes. 15 minut not more...
But maybe this is more interesting after you have expanded the flying area.. don't wait to long with expanding the flying area.
It is that what the sim community is looking for.