The price i paid for a set of bino's was off set with the pelt of the first cat I spotted and shot.
My eye's just are not as sharp, and the example of this was just 3 weeks ago when i was calling and saw what looked like a small log. I was changing sounds, so i did a quick sweep and there was a large male bobcat, masked partly by a tree. I shot that cat at just over 100yrds and a coyote that was in the tree's behind the cat. I wouldn't have seen either if i hadn't scoped the area.
Just think of how many stands you are doing in a year, and even if it's one a day that is sitting there, Bobcat or Coyote, that would make a big difference in your years total success.