Does Anyone Know What The Price Of The 1967 Shelby Cobra GT350 Mustang Was?

I need to know what the price of a 1967 Shelby Cobra GT350 was. I have looked on google to try and find it, but the only prices i am finding is how much it is for the 1967 Shelby Mustang today. I need to know what the price was actually during 1967, not the price today. If you know what the price was back in 1967, please let me know the price. And please don't just guess what the price was unless you know it's close to the actual price, because i have to put the price on a project i have to do, and i don't want to put a wrong price on my project. Thanks for the help.
I was just looking on a website right now, and it says that the price range was from 19,995-32,035, does that sound like a good price range? I don't really know how much cars were back in 67' so i don't know if that is how much cars were back then. Also, if you aren't really sure the exact price, you can just put a price range too. Here is the link to the site i was just looking at if you want to look at it, http://mustangmonthly.automotive.com/43835/shelby-cobra-car-fleet-overview/index.html