I am thinking about buying a Cabelas electic caller for 140 bucks. We already have one buts its my stepdads and i want my own so i don't have to worrie about him having to be home soi can ask. I have read on making my own but i don't think they sound quite as clear as one you can buy. Also i want it to travel far cause i will be calling crows as well as cyotes. I guess i can make one for around 40, so is the ones pro built worth 100 more??????