Well, per month or per year needs to be clearified. Larger commercial locations are figured (as I say usually) annually.
whether its also triple net or just utilites is still another story.
Price is very important. Its not like selling items where it doesn't matter if you have an order for 10 or for 10,000, or 1,000,000. All you need is a bigger box.
With a pool room your area is fixed and your amount of max sales is established by the number of tables, and the area you have.
Even if you built your room in Heaven and there were a zillion angels wanting to play, if you only had a dozen tables, you only can sell a dozen spots.
Percentage of full time activity needs to be figured in as well. On an annual basis, not monthly for this figure. 50%? 60%? 80% capacity at all times?
Shoot even 90% capacity (which is a pure pipe dream) in my relatively small 6500sq ft room at 12,000 dollars a month plus, plus, plus, is as ribdonor says ... stressful at best
If you opperate at 60% capacity income on an annual basis, you are lucky.