I think eveyone would agree that it depends on the ministry, and their budget.
The bible does speak of those that are in the Levitical order getting compensated by the church.(the Levites were not only the musicians)
Now you may not want to be paid. Thats commendable. nothing wrong with that. I've done that in some places where I knew they didnt have it like that.
But the church should not cheat the musician. I've seen churches not pay the guy that's been faithful for years, but when he goes on a vacation, and they get a fill-in, then they'll pay the fill-in.
Thats Bad Biznezz.
250 is cool, (but may be low for NY standards, I think)
Also, as a side point the musician should not hold the church hostage either. I've seen that too. That usually happens when the musician really doesnt care about the ministry.
If you love the ministry you're in, then the $$ may not be a major point 4 u.
But again, if they can then they should.