flat-rate

Translations
фиксированный
единый
по фиксированной ставке
с фиксированной оплатой
Definitions
Charged at a fixed amount or rate, regardless of the quantity, duration, or extent of use.
Based on one uniform rate for everyone or in all cases, rather than on a variable or progressive rate.
Words
flat

adjective
фиксированный
rate

noun
тариф