Free: Contests & Raffles.
why do places that take donations send out gifts? Wouldn't they have more money to put in on the things they are trying to fix if they didn't do that? Makes no sense to me.
As an incentive for you to donate. Hence the minimum donation. I'm sure they don't pay much for them in bulk. Even if they make $5 after expenses, it's $5 they wouldn't have had.