I'm looking to fence about half an acre from Mr fox. Current plan is mix of rabbit netting and electric fence wires. I've been looking online to find out roughly how much it costs to run a couple of strands about 100m and the only I've found are something like 0.005p per day, so negligible. Seems a bit too good to be true. Would an average bit of electric fence 100m long really only cost a few pounds a year to run? - I don't mind if it's a fiver or £20 but don't want to find out its £95 after six months!