Handy,
If it were a .357 I would be far more cautious; but it ought to be extremely hard to "wear out" a .38 Korth. Unless it had been neglected, abused or otherwise beaten with heavy handloads, all being very unlikely in the hands of someone who would buy such an item, it's the sort of calculated gamble I would take if I wanted one.
The reason the Korth is selling so low is probably the fact that it is somewhat unknown to many people, has a limited market of buyers, and it might have originated from an estate or bankruptcy sale. Whoever is selling it doesn't want to sit around waiting for it to sell at a more regualr price.
If you want one, I would say go for it; keeping in mind that in the unlikely case of it needing attention it might be difficult to find a Korth gunsmith stateside - and very expensive and complicated sending it over to get serviced in Germany.
But as far as the rational of spending that much on a very fine piece of machinery, such things appeal to me too.
