Build a Slot Machine Website based on Videogame Fifa 15 Ulitimate team

so in the video game fifa 15 ultimate team people can use virtual coins to buy virtual cards of real life footballers that they can use in the game, This is how i want it to work, people can purchase up to 500,000 coins to put into their account if that makes sense, they can buy 100,000 200,000 coins etc. so people can deposit a minimum of 100,000 coins and the maximum would be 1,000,000 coins, it would be £5 per 100,000 so 200,000 would be £10 . so people would obviously have to set up an account, so they can have their accouont with their coins in it if that makes sense. people can place bets of 5k, 10k 20k 50k 100k, 150k 200k 250k 300k etc all the way up to a million if that makes sense and obviously the higher the gamble the higher the return. site must look professional