We are working on a project that is based on cooperative purchasing of a product at its actual cost, with the addition of operating and management fees ranging from 10% to 15%. This project involves modern cars less than 6 years old. For example, a car with a value of (1750) dinars and an additional (250) dinars, making a total of (2000) dinars, is sold to 200 individuals at a rate of 10 dinars each. After seven days, a drawing is conducted publicly to determine the winner of the car. The latter should demonstrate that their income is below a certain threshold, say 500 dinars, and they should also pay 20% of the car's value back to the other participants. However, the winner is not allowed to participate again in any car for a year. This is knowing that all the conditions are made clear to all participants and the marketing process is conducted via social media. What is the ruling of Sharia on this?