Participating in promotional prize drawings is permissible as such prizes are offered by one party and the aim is to promote the company’s goods.
The European Council for Fatwa and Research, states the following: It is permissible for a Muslim to take such prizes because they are offered by one party, i.e., the donating company, without stipulating an increase in the price of the commodity, but it is just a way to promote its goods, and the other party (the consumer) does not bear any loss that would involve him or her in the rulings of unlawful gambling.

What is prohibited in this matter is only that the Muslim buys these goods with the intention of winning these prizes, for this intention would involve him in gambling that is unlawful.