the ping pong event in Luton had a buy in of £10 per head, from which expenses were taken, and the remainder paid out in prize money.
So, for the pool, if we went with a tenner per person, and got 32 people, that would be £320 - £24 for table hire, = £296 prize pool. Then pay that out to the winner, runner up, and losing semi finalists.... say 40%, 30%, 15%, 15%