Sometimes people use the word raffle in place of drawing or giveaway so the op may or may not have envisioned money changing hands for a "chance" at winning or may have thought about everyone who enters as getting a "prize". In most states gambling implies that money is exchanged for a "chance" at winning no matter what the
value of the winning item is. If people do pay as long as they receive an item of comparable value all is good.

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