I haven't been there yet, but this place just opened up in November about 40 minutes from my house (Scotch Plains, New Jersey). Its called All Star Paintball. I cannot wait to go. It sounds and looks so cool. Link to their site is below. Pricing is:
$25 entry with all day air
$35 entry with all day air and rental
Don't yet know what the rental is, but I'll let you know.
Cost of Paint:
Sterling Shield Paint (2000 Paintballs): $45.00
Sterling Rec Paint (2000 Paintballs): $55.00
Sterling Game Paint (2000 Paintballs): $60.00
Sterling Shield Paint (500 Paintballs): $12.50
Sterling Rec Paint (500 Paintballs): $15.00
Sterling Game Paint (500 Paintballs): $16.25
All Star Indoor Paintball Arena in Spotswood NJ
EDIT: Added more information.