Do they donate their money publicly during the service while being open about how much they donate? That would be completely unacceptable in any halfway respectable church. Donations should be private, and should have no impact on your position in the church.

Any church that focuses too much on donations and money is pretty obviously a scam. An honest church is run by the congregation and the vicar/preacher is struggling as much as the average member. Faith is not a profit-driven enterprise, as Jesus pointed out on the temple square. Yet nobody today is chasing that den of thieves out of our churches. Maybe we should.