"expensive tariffs" is a correct and usable phrase in written English.
You can use it to refer to taxes or fees that are higher than usual. For example, "The government is attempting to reduce the amount of expensive tariffs imposed on imported goods."
"Consumers must be aware these price cuts are to very expensive tariffs that are best avoided.
Two-thirds of British domestic bill-payers have never changed supplier, and three-quarters are stuck on old, expensive tariffs.
They face limited, more expensive tariffs, and pay an average of £80 a year more than other customers.
It's just not right that two thirds of energy customers are stuck on the most expensive tariffs.
The campaign group called for simpler pricing and protection for uninformed customers so that they do not languish on expensive tariffs.
Energy suppliers are the same: customers get dumped on expensive tariffs unless they remember to vote with their feet and switch every year.
Don't sit on an expensive tariff wondering whether or not you can move.
It said the figures could not be used reliably to show supplier margins on the cheapest or most expensive tariff.
"This means that many consumers will face a choice between remaining with a more expensive tariff or losing the benefits of their smart meter," the NAO said.
"My advice to customers who have fixed deals expiring soon is to look to swap at least four weeks before the termination date to avoid automatically moving to what could be a more expensive tariff," suggests Byrom.
This plan starts at £59 a month with a £9.99 upfront cost on the 16GB phone, while the overall most expensive tariff is the same plan on the 128GB phone at £64 a month with an upfront cost of £39.99.
