LaterPay makes it easy to buy digital goods and bundles even smallest purchases (starting from $ 0.05) into one invoice across websites and across devices. At the end of the process you use your credit card or other payment methods to settle your LaterPay invoice.
In short: You buy with LaterPay, you settle with your credit card (or other payment method).
Please read more here about purchasing.
Please read more here about payment.