Conversation so far:
What was Seattle Slew's heritage?
Seattle Slew was the first foal out of My Charmer, a stakes-winning daughter of the otherwise obscure sire Poker.
Did Seattle Slew show signs of his greatness early on?
Seattle Slew was not considered particularly attractive as a foal, leading some to say he looked like a mule.
When was Seattle Slew's first race?
He finally made his first start in a six-furlong maiden race on September 20, 1976.
Who were Seattle Slew's parents?
Seth Hancock of Claiborne Farm recommended the mare be bred to Bold Reasoning.
Who was Seattle Slew's mom?
Seattle Slew was the first foal out of My Charmer.
Are there any other interesting aspects about the Seattle Slew article?
Seattle Slew was purchased for just $17,500.

Question: Who bought him for $17,500?
Self-contained rewrite: Who bought Seattle Slew for $17,500?