Found a 1968 GTX 4 speed 440....Value?

Hi Guys,
I am working on my 65 Barracuda now, but I came across a pretty pristine, numbers matching 1968 GTX. 4 speed, 440. Sellers price seems pretty low (35000.00). Any opinions? Thinking about buying it and driving it for a bit, then turning it for a profit. What do you guys think?