Is this unethical?

Aries

My daughter is in kindergarten and she just got her first fundraiser.

I’m a commissioned artist, so I was thinking of raffling off a piece of custom art. Each purchase of a fundraiser item would get a ticket for the raffle. If you buy more than one item, you get a ticket for each item. Then when the fundraiser ends, I would draw a winner.

Is this unethical? I don’t want to do it if I’ll get backlash.