Ribar riba ga fitilun da ke hana fashewa yawanci yakan bambanta tsakanin 10% kuma 20%.
I mana, wannan ya dogara da farashin siyarwar ƙarshe na fitilun da ke hana fashewa, kamar yadda kowane samfurin yana da farashin sa. Ana samun riba lokacin da farashin siyarwa ya wuce waɗannan farashin. Duk da haka, a kokarin kutsawa wasu kasuwanni, sayarwa a farashi ko ƙasa da ƙasa na iya haifar da asara a wasu lokuta!