We’re also in an area where the Vodafone signal is not good enough. Unless you’ve a three tier off peak meter, it’s not rocket science to look at how many units you’ve used, and multiply that by the cost per unit!
Regarding bypassing meters, I remember we were getting a new meter, and I had to laugh when the fellow fitting it said the firm would probably have employed a team of highly paid experts to make them tamperproof, and he guaranteed that, within the month, two wee guys in a pub in Glasgow would have worked out how to fiddle the electric!
( I only say Glasgow because it’s our nearest city. Other city pubs are available!)