That's a single photo of a boat - so, this is the quick response from me (and I have owned a Stringer and actually kinda' like 'em):
If the boat is in as good a shape as that photo seems to suggest (and you need to review the boat CAREFULLY - read
HERE), and the engine and drive are in good working order. Then, I think the price is fair for the boat.
BUT - - realize you are buying an OBSOLETE drive and an OBSOLETE engine. The drive is likely a electric shift, which will make many people cringe like yer' draggin' fingernails down a chalk board. Most marine techs won't touch these systems, and some have never seen one. You will likely become your own mechanic. Some parts are getting tougher to find, some not so tough. But sometimes you'll run into a situation where repairing the boat will be a difficult process of locating the parts you need - which keeps you off the water for a while. AND - you can't re-power this boat to something more modern very easily. You pretty much have to rebuild the entire transom in order to convert to a different drive system (which takes time or money).
Generally, I would recommend a new boat owner/buyer to steer clear of this even though it's a reasonable deal. If you're experienced with boats, and understand the Stringer outdrive then it does look reasonable if everything checks out.