Share 'Disc Golf on Ball Golf Courses (Fly 18?)'

I was wondering if anyone knew of a site that listed all of the permanent courses on ball golf courses... I believe their called fly 18 courses? Anyway, was interested to see how many were around. Also wanted to know what they charge for green fees compared to the ball golf on the same course? If anyone has been involved with making one of these courses a reality, please email me. As a ball golf…