I would say it is worth something, it all depends on if you are willing to advertise it and possibly ship it. There is a used one on ebay at the moment they are asking $200 plus shipping for, I would say yours still in the box, unused would be worth at least that much. Probably more. Good luck on selling it. I am sure there is someone out there that would love to have it.
I have a friend that is interested. Can you send some pictures to firstname.lastname@example.orgCleaning out garage for a pandemic activity and found a brand new camping kit still in the box from GM. Is it worth anything?