Circuit and Special Day Assembly Racket
Elders meet in private and decide to send a set amount of money to the Society, usually few thousand bucks. That amount is put on the books and is added to the costs of the assembly, resulting in a deficit every time. The deficit is announced to the membership, but a list of itemized expenses is never announced. If the deficit is not covered by the money collected at the assembly, the local congregations are sent the bill. If any money is left over, it's sent on to the Society as well.
Non-elders have no clue that their donations are going to the Society. Most are left with the impression that their donations go to cover the costs of the assembly.