For anyone interested, I came across this 350 in Daytona. price looks resonable compared with what others are posting on this website. For what it's worth.
http://lincolndaytona.com/new-Daytona+Beach-2016-Ford-Mustang-Mustang+Shelby+GT350-1FA6P8JZ5G5522188
http://lincolndaytona.com/new-Daytona+Beach-2016-Ford-Mustang-Mustang+Shelby+GT350-1FA6P8JZ5G5522188