I'd buy it. For $50.
Just because it's old doesn't mean that it's not a cheapo Sears amp.
Unless you're looking to find out what it was like for a 14 year old to play a practice amp in 1972.
I do regret passing on one of these at a garage sale last year. $10.
Oh, and I'm not a gear snob. My amps are a couple of low end Peaveys and a Blues Jr.
Your $200 Craigslist $ is maybe better spent here: 5 Watt Shootout