The "McIntosh light kit professionally installed" makes me laugh, but it sounds like it's been largely unrestored and any recent service was not by a certified McIntosh dealer.
However, I do understand (and agree with) what the striped mule says, having desirable gear I can drive to, see, touch, and hear is worth something. If I show up and like it, the seller isn't too far from what it's worth, we could probably come to an agreement. If I had to have it shipped it is risky and expensive.
The caveat with the C28 however is whether it has had all of the ground/drain crimps soldered/serviced, if not there's a fairly labor-intensive task necessary to make it work properly.