It seems to me that any preacher, pastor, rabbi, or cleric of any stripe who feels called to do God’s work, and requires payment to do it, has questionable motives or misplaced priorities.
The person truly called by God to do His work is going to do that work regardless of payment. And that person will get their reward – sometimes through gifts of man and sometimes direct from God.
The litmus test for a pastor – would you continue to do your job if the money dried up? After all, you said God called you to this ministry!
And again – Pastor – have you ever changed ministries in order to make more money?
Think about it.