Re: should i buy this boat
If it's really running, go for it. At that price you won't get a sea trial so you'll have to take a chance on "running on muffs" being the same as "running." Take some muffs with you and a compression tester.
There was a discussion here about how a short boat trip costs >$50. If you use it 6 times you are ahead!
Then, if you like projects, you know you will have to deal with the floor (which means stringers) and that home-made transom. So be ready to walk away from it.
Don't forget to price, and budget, registering and insuring both the boat and trailer, and storage.