Well, the thing to do with that Western Holly would be to have it restored, and the selling price is fair when you take that into account. It would be over $1000 to have its valves overhauled, timers ditto, and its oven insulation replaced. All that is really necessary for long-term safety.
How many times have we all seen some seller who wants as much for his unrestored junker as a restored machine is worth? Sometimes they get generous and knock off $50 because it's a rustbucket and it "needs a little spray paint which you can get at any Home Depot", or some such idiotic statement.
So, this seems to be a seller with some sense, and I say hooray for that.