We moved into a house with prepaid electric and gas meters and they are so expensive! We have never used them before - always been on direct debit payments.
Turns out we've been unknowingly paying a previous tenant's debt, so that will be sorted today. Ugh. We are also getting regular meters fitted next week.
But in a general sense, prepaid meters are the most expensive tariff, and usually levied against people living on the tightest budgets. I can understand their usefulness in recovering (the current tenant's) debt, but the standing charge and price per unit is very high as well! It all seems so... Well, unfair! Thankfully we have money to top up the meters and keep our house lit and warm, but I can imagine the struggle if we couldn't heat our home until payday. And it isn't like you can be without it and save money, because the standing charge gets applied whether you are using gas/elec or not!