[Closed] Anyone use ebico for the gas/electric

Just had my monthly direct debit re-adjusted by npower. Monthly cost has doubled.
The gas is on a two tier rate. I've just checked my bills for the last year and I've mostly been charged the higher rate of 7(ish)pence per kwh. I don't use enough to benefit from the subsequent lower unit unit price.

Just been looking at ebico and their flat rate of 3.5p per kwh would have saved me nearly £100 over the last year.

Anyone used them? Their prices seem more transparent than most and fairer for low usage users like me.