I think most of the AMB system owners are also hobby shop owner, they should recover some cost from a race. Those who organize race may somehow rather directly or indirectly have monetarty benifit from this hobby. The points is, let have a racer freindly race.
I know, low entrance fees may just an illusion. A racer who enter race will spend far more than entry fees. But we heard no complain from racer. If low entry fees is what racers want, then have a race with low value prize but smooth and professional race management. Then everyone will come to enjoy race........