https://eauclaire.craigslist.org/cto/d/eau-claire-2002-f350-crew-cab-long-bed/7093920153.html
No pictures, but he says there is rust. Montana is a different language completely, $4,500 but doesn't seem too bad for the truck you posted.
At this price and crappy description, I'd bet the one below is complete junk.
https://eauclaire.craigslist.org/cto/d/glenwood-city-diesel-truck/7102014732.html