The current hours for the winter season are as follows:
Friday (BYOP; White Fill ONLY): 4PM-10PM
Saturday & Sunday (Field Paint ONLY): 10AM-6PM
The last I was up their I paid $47.81 for a case of Stinger. As mentioned above, Entry is $20 which includes free air for the day. Games are typically organized by the players also and run the remainder of the day or until everyone is out of paint.
For the indoor portion they have a decent sized speedball field which was recently re-turfed and a black light scenario field. There are also two more fields outdoors but I believe that they are closed for the winter season.
I recognized your username from the MW 810 WC and Futureball Reball threads so I'm assuming you are familiar with Killer. In comparison to Killer, each field has there ups and downs but I'm much more impressed with PBWorld. PBWorld is a nicer facility with a much larger speedball field and is certainly cleaner. I must say though, I am much more impressed with the organization at Killer. Management does an outstanding job at organizing games and keeping things moving so that those who want to play can always get in and play.
From my experiences, Killer was much easier to play at as a walk-on with their organization. It seemed they had much more individual players and small groups. At PBWorld you will see more tournament teams with the exception of group parties. I go up alone and always manage to jump on a team and play (I often find myself as the only walk-on). It's typically never a problem to get in on every game although I have run into problems at times when it was just two teams up there for the session.
Hope the information helps and enjoy your visit, it's a great field!
More information can also be found on their website: www.paintballworldohio.com