Bought one of these from lidl, cheap but excellent piece of kit, less than £100 (even if not advertised, ask manager, they often keep them locked up in the warehouse)
I thought I was walking in empty fields untill I got one of these, it taught me my technique was crap. Using the infra red the bunnies eyes light up from well over a 100yds away, excellent for beginers and the more experienced! It lets you know when you have screwed up bigtime. But the rewards are great.