Y3647) TH 11 full max | Lvl xp 123 | BK 50 AQ 50 GW 20 | BM 13 | GEMS 564 | Heroes Skins 4 | Name change 500 GEMS | SCID

Payment fee is collected to pay for service related to the product, which is a standard practice in eCommerce and other industries.

In detail, it is applied to cover services rendered to the consumer as well as administrative or processing costs, such as payment processing fee and 24/7 customer support.