I usually seek these items out when the price is right since my skillset for fixing them is always growing (Thanks OGR! haha)
Missing parts usually scare me off though. Parts hunting isn't one of my favorite things to do because I do it quite a bit at work and it gets old having to learn part number schemes and whatnot. But I don't mind repairs in the basement, hanging with the dog, and a beer or six. That's not too bad at all.