Sales increased by 840%! Why do Polish Orange users buy more and more on Kinguin? Sales increased by 840%! Why do Polish Orange users buy more and more on Kinguin? In order to make the customer experience top notch, we provide our users safe and easy to use payment methods. One of them is Direct Carrier Billing, dedicated to subscribers of the Orange Polska mobile service. Since its introduction, we’ve noticed a stunning increase in the number and value of transactions on the Polish market. In 4 months, the payment volume has increased by 840%, the payment count grew tenfold and the average value of a single transaction increased 8 times.