I was a fairly big player in the education space at one time and once got an offer of $200 for my main domain.
I emailed the guy back saying no thanks, it’s worth far more than that and he had the cheek to reply saying – you’ll never get more than that, $200 is a great offer, etc. etc.
He basically told me that no one would possibly want the site and only the domain had any value. I laughed at the time. I laughed even harder when I sold the site (along with 4 others) for $160,000!