All depends on what you intend to do with it.. If it is just a investment , then it will hold its value better boxed and un built.... However if you want to look at it , as a shelf queen, then build it...better still, race it at vintage events..
Back in the day , I had one of the first Hirobo City.., just about the first 4wd rc car.. It just blew away the Tamiya Frogs etc that the others were racing.!