The Mark IV was a nice car...had some subtle and some not-so-subtle but noticable "modernizations".
$45-80k is the range I have seen them offered at recently.
Is it 'original'? ...depends.
It certainly is an Original Autokraft.
With the Cobra name legally licensed, it is indeed a Cobra.
Nothing, though, is an original Shelby Cobra unless it spent some time in L.A. during the sixties.
...anything else is a post-era facsimile.