A portal of raffle ticketing system is in need.
Customer A should be able to post an advertisement of a product or a service, the cost of which should be divided in a number of tickets.
Customer B, C, D etc would buy as many tickets as they want, only after they will be able to successfully complete an easy question game.
At the end of the advertisement period, a random selection of one of the tickets should nominate the winner among the purchased tickets.
The raffle portal should be based preferable on an open source CMS like OpenCart.
Complete theme and css, will be supplied by the developer's side.
Dear developers pls supply your already implemented raffle systems for evaluation.