By Dave Snelling New research has exposed exactly how much leaving your router on 365 days per year actually costs – but switching things off is a terrible idea (more on that in a minute) . The team ISPreview crunched the numbers and discovered that some devices will chew through over £55 per year when being pummelled by downloads, streaming video and working from home. Prices varied depending on the equipment supplier by different providers with TalkTalk’s standard Hub 1 costing £26.93 per year when actively running and BT’s Smart Hub Plus costing £58.43 when being pushed to the limit. It’s a…