Your best bet is to call your local fields to get the best pricing, as they may have changed since someone last booked. Most fields also require you to call a week or two in advance so they can accommodate your private party.
As far as Re-ball, I'm not sure there are any in the Detroit Metro area. The closest that I know, that even use Re-ball, is CRU Paintball in Flint, MI. and even then you would have to call them to get the details.