It is worth the money a buyer will pay - no more, no less.
Look at the first picture from the engine room - do you see all the space? it is a very small block...
Color... as stated - it is very special and will not be for everybody = not many potential customers... but then again - only ONE is needed
Look at what else is for sale (cobra country, here and...) - deduct a repaint and a little for the small engine... that is likely the resale value.