Some glass shops will be happy to make one up for you. If they try to sell you a window, hang up and call another.
Just to give you an idea, my company would sell that to you for $92.00 in clear, $118 LowE, $130 LowE/Argon.
Good Luck
Ed
You are thinking of Silverline - not Simonton. Simonton makes a superior grade vinyl window.
Silverline became the largest vinyl window manufacturer in the world by means of the American Craftsman (Home Depot) window, selling the Silverline name thru other channels, and also the Stanley brand...