This appears to be the same boat that was purchased in April of this year and discussed in this thread linked below.
The previous purchaser did not keep it very long, and I would want to know why. But when people talk about resale value on C-Dorys, dang, what other 33 year old 18-foot trailer boat with a 13 year old 2-stroke outboard would be offered for over $12K? And still be considered a good buy!