Prices vary, some charge per pax per game (Revo) but i'll give u a rough indication of the per hour rates for those I have been to for apple to apple comparison. All prices for peak (evening) hours
Revo Screen Golf: 50
V Golf: 40 to 70 depending on size of room
Max Swing: 40 to 80 (if u sign as a member, 50% more time, i.e. pay 60mins get 90mins)
Try giving them a call, all that I have gone to are professional and will quote prices readily.