I agree its only worth about 250-300 at the most. Keep looking....One thing I did was rushed into buying a boat. I began not knowing anything and bought a 12' boat. Don't get me wrong, I love my boat but I should've bought something bigger. Also the trailer needed leaf springs ($60) tires ($80?) bearings ($50). The boat also needed a few hundred to get up to par and it leaked, needed new transom etc. That looks like a project which is fine but you need to think about how much it will cost to get it on the water and looking nice. If you have done your research and know thats the one then go for it.
You can spend some money now buying things such as seats, mounts, wood for decking or benches, carpet if wanted, bilge pump, motor, trolling motor, battery, rod holders etc. I didnt know what I was getting into when I bought my boat and trailer ($400) Ive spent close to 5,000 on this boat already! HAHA, this is my new hobby and I like nice things! Check out the boat in sig and you can see the before and after.
If you really want it offer 250. Take care!