I would say so. It doesn't seem like it costs much than 1000 to buy a new one, so about 400-600 more you could ditch the trouble of an old outboard, and have the reliability of finding parts and service for at least 15 years. That's my take. I picked up a 30 hp nissan for 300 and it was an 86. So, I would say not worth it. But wait, and offer him 300 for it later and he'll take it.
Chris