Okay, so a guy my wife knows through her business has a 14 year old son who's really into paintball.
SO, every year he spends ~$500 renting gear for him and 14 friends and buying 3 cases of paint. He told my wife that if I could get the gear (Gun, hoppers, tanks, BBDs and Masks, he would let me run the field that day and if it went well, I could use his field (5 acres) to play paintball on as long as his son was allowed.
So, my question for the masses, where would one find that amount of rental gear? He said they use Tippmann's and the like so nothing terribly fancy. I figure if I order paint for $30 a case off the interwebz, that leaves $400 for gear.