When the prize offered for the raffle draw is that the winner gets to share in the overall sales of the raffle.... that's a Split-the-Pot draw.
The most common form of this type of draw is a 50/50 draw where 50% of the ticket sales goes to the winner and 50% goes to the organization that is hosting the raffle.
So why do we call it a Split-the-Pot draw? Well... that's because the organizer has the right to set the share percentages any way they want. For instance they could declare that they will keep 40% of the pot (sales) and 60% goes to the winner. In fact they can choose to set those percentages and weight them towards the winner or their organization any way they want, so long as they don't give away more than 85% of the pot. (Keep in mind that if it is a raffle the LGA takes 1.5% of sales.)
50/50 draws are by far the most common... but who is going to be the first to offer a different split? How will it affect sales positively or negatively? Will the uniqueness of a 60/40 or 75/25 catch more people's attention and lead more people to buy tickets?
Will you be the first to try it?