Fairy
Also called: fee, surcharge, charge, commission or commission
A fee is an agreed-upon payment for providing a particular service.
The fee can be a consideration for providing a particular service, such as placing an ad or delivering a lead. For example, a fee can also refer to the payment of a surcharge or agency fees when mediating between an advertiser and media.
The fee to be paid can be a fixed amount(fixed fee) or an amount tied to actual performance, such as an amount per conversion.