The number of people playing has no effect on the payout structure. What does have an effect are
1) The level card you play, generally the following
Level 1 - $ 4 pays $ 50 for regular games $ 250 for the coverall
Level 2 - $ 7 pays $100 for regular games $ 500 for the coverall
Level 3 - $10 pays $150 for regular games $ 750 for the coverall
Level 4 - $14 pays $200 for regular games $1000 for the coverall
2) The session being played - some are double/triple pay, i.e some games pay double, some pay triple,
some sessions have guaranteed $1,000 coverall no matter what level card you play, etc.
In addition to the regular games there is generally at least 1 extra "special" game with the possibilty of a
larger - $25,000 to > $100,000 prize depending on where you play.
All halls have a requirement that you play minimally at least one level 1 card. So Bingo can
cost you from $4 up to over $100 per session depending on the level and number of cards
you play. You would need to visit a Bingo hall to get more details about that Bingo hall's
price and playout structures.
You can also either play paper where you mark the numbers as they are called with a dauber
or you can play an electronic machine where the numbers are automatically marked as they are called.
The machines cost a little more but generally have specials for a reasonable amount ($15-$20)