Do you even understand what is the difference of BBB and Euroleague for example? Everyone in BB can get to BBB. In real world, there are big rich clubs and small poor clubs. There is no chance in real life (yes I said it, zip, zero, nada) for Estonian IV division (we did have 4 divisions, but now we have 3 nationwide divisions) club to ever reach Euroleague (hell we can't even get our divI teams there). Everyone in BB can get there. One example is currently playing there from Estonia.
Giving out huge bonuses in BBB would give the teams a big edge over their countrys managers. Pocketing 20k per win is acceptable, if there has to be a prize at all.