A few minutes of slot machines is certainly more expensive! here each lottery is 99 minutes in which you have the opportunity to place more bets based on the progress of the game.
Better than a scratch & win 3.0!
If a round ends with a single player, the round is repeated. No bets will be lost!
sure you can see it like this but IMO it is very high for the start. my tip for you is to start with small ticket price and later to offer also higher prices for tickets.
you cant compare slots or scratch with lottery
what will you take from a draw?
just trying to help
good luck
edit
in general a lottery should offer low ticket price and high winnings as it is in real lotteries