It was easy to find kegs in that condition twenty years ago. It's sad to see what is going for good money in home brew shops today.
I am only purchasing new kegs these days, but I may pick up one or two of these things for NHC 2016. All but one of my current stable of soda kegs are 3-gallon kegs. The one 5-gallon keg that I own is too pretty for that kind of duty.