Build an Online Store -- 2

MLM or Scheme related web site. Want to develop as Shopping products with instalment payment procedures. Product deliver after full settlements. PHP Script required. Similar to Snapdeal.com. Only payment process done by part payment modes. For example: you buy a product for 50,000 INR. you don't have full amount. So you can pay by instalments. But the actual product cost is 80,000/- We giving for 50,000/- as Gift.