Estimated cost of a 68 z/28 when new

[black69]

I thought someone could quickly give me a cost estimate of my car vs me not knowing at all what the cost would have been.

68z, 410 rear, M21, no options interior (no tach or console). Standard paint choice (Blue outside, black inside standard interior). Has the chrome trim on the doors by the base of the windows, some cars have some don't I see. Base radio. Has rear spoiler.

Just wanted to know what the base cost of the above would have been (no clue at the moment). thanks!