Are free coupons that offer a chance to enter a prize draw considered to be under the category of "There is no prize except in archery, camel racing, or horse racing" if they do not increase the price of the commodity, and the purchase was intended for the commodity itself?

The coupons freely given by stores to all people, or to anyone who buys a specific item from them at its original price without increase, are permissible because they are a gift or a donation and not a competition. However, if the store sells the coupons for a separate price or increases the price of the item because of them, then participation in them is not allowed, as that is prohibited gambling.