They are a custom call but at a good price. Look on the web site doagamecalls.com
They are a great little meat call and have a unique yet ducky sound. They go for $55-$60 for a coco barrel with an acrylic insert, and an all acrylic goes for $75-$80. I love mine it is the call I find myself reaching for and I have a collection of 25 or so customs to pick from. RNT, Gaston, echo, HS to name a few.........Give it a try if that is in your price range. Rick is more than happy to blow one over the phone for you or whatever you need.