you would hope that going towards the costs  you would be able to cover 50% with a door fee  and have stalls and even drinks ( no grog) and even say a pinball comp    these could help cover fees
even  t shirts and so on , again like the ones in USA  , be nice to get as many pinball stalls as you can and even if you have to seperate them all  at each end , and have pins in the middle for people to play
these could be for a auction or retailers to show off , I am sure you could get pins from everywhere and sayd a small charge for pin put on show , to help cover costs

Kind Regards,

Mark.c.

Pinball Spare Parts Australia Pty Ltd
Factory 6, 176 Canterbury Road, Bayswater North VIC 3153
E: markc@pinballsparepartsaustralia.com
T: 03 9720 6422 M: 0419 384 911 F: 03 9720 7344
W: pinballspareparts.com.au