You probably shouldn't use the term "investment" unless you're going to sell it off without having ridden it. What I think you're asking is if this is a good price. The answer is that it is insanely good if the bike doesn't have a cracked or bent frame and its functional.
By the way, definitely take the Motorcycle Safety Foundation course. It can and probably will save your life.
Dragging knee is for the track, and dragging tail is for the lot. --Kane Friesen
When you're in a car, you're watching a movie; when you're on a bike, you're in the movie. --Robert Pirsig
Identity theft is not Fun