The 50/50 Fundraiser

In some cities in Canada, a different type of fundraiser is held.   Out of the total money donated, 50% goes to the fundraiser cause, and 50% is raffled among the people who donated.  Those who donate the most, have more probabilities of winning the raffle.

I don't know how effective this scheme is to raise funds, but it seems an interesting and "out of the box" solution.   I guess there could be some that have moral issues about it, since there its an event with private and public benefits involved, leading to possible conflicts.