Due to some undesirables (drug addict jailbirds) moving in with (leeching off of) their family members on our road, I'm interested in putting up a few cameras around my garage and my sheds out back. I've browsed Amazon trying to find something that will do what I want but I'm not sure what's worth spending money on and what's not. I'd like something that's wireless, at least from the DVR to the camera. My sheds are 2-300' from my garage, there is power run out there but I'd rather not have to run another line. I'd only need 3-4 cameras at most. Any recommendations for a decent system that is in the $500 range or cheaper?