That there's an authentic MFWO Poverty Boat, worth every bit of $600* if it comes with the oars, frame, & rope. More if the dog & VW bug in the background are part of the deal. I'm expecting it's a bucket boat. Looks like it's an old neoprene boat - if you sleep late you can also fry your eggs on it on desert trips. Looks like it's a 16' but I really don't know. That will play into the pricing estimates.
*That's all I'd pay for it. Then again it may be one of those rafts that appreciate with age, in which case it's probably worth $10,000 by now.
Should be good for some fun splashy trips!