API : want to use it

user side : 1- select the game 2- select the server or other things 3- enter the amount of game value that he want to buy 4- click submit to know the price 5- display list price table , which offer the price of game value which the user chose it with all payment method admin side : 1- edit the value of convert currency ( to convert the $ to Egyptian pound ) 2- edit the fee of each payment method ( 4 payment method ) 3- edit the discount value ( 0-9 $ , 10-19$ , 20-29$ , 30-39$ , 40-49$ , 50$-... ) 4- chose which game appear and which not