1. It is not permissible to sell an item online on the internet before taking possession of it and moving it from the distributor’s place. 2. It is permissible for the purchaser to pay the price via the payment processor in return for 2% of each transaction. 3. Acting as a proxy in return for a fee is valid if the distributor agrees to that and regards you as his agent, in return for commission that he pays to you. 4. It is not permissible for the customer to pay installments through the payment processor and it comes under the heading of Riba.