I just checked. Hinckley is actually cheaper to start. At your place it is $35 for field fees, gun rental, co2 and 200 rounds of paint. At the Combat Zone in Hinckley it is $27 for the exact same package. Paint is more expensive at Combat Zone, and will probably end up costing you $10-15 if you split a case with someone.
Over all, thats a difference of about $5. Also, play is from 9am to 4pm.
Check it out:
http://www.combatzoneinc.com/