How to pay for a computer rental? Given that most of these shops are online, your only options are to pay this via credit card or to use PayPal.
To pay for this via credit card, you have to fill up the form and then enter your 16 credit card number, expiration date and the 4 digit validation code which is found at the back of your credit card. If your request has been approved, you will get a receipt confirming the payment for the rented unit so this will be delivered to you or you can pick it up.
If you decide to pay for the rented computer via PayPal, you need to open a PayPal account first and then put some balance into your account. If you lack the funds, you can transfer money from your bank account then when your payment has been processed, only then can you get the unit.