Talk me out of it....New to the hobby, open or sell 84 Topps Unopened Box

[ChicagoDave]

First off, I would assume as most I started collecting as a kid in the junk wax era. I stopped around 1998 and until my 6year old son recently bought some cards at Walmart, I haven’t had much interest. All my 90’s worthless cards are box up in our workshop however I found myself amazed at what has happened to the hobby over the last 20+ years.

I also recently came across a box of unopened 84 Topps. Box is in good condition and does not seem as it’s ever been tampered with. It is very tempting to open it but the objective is to sell the box and use any profits to fund the hobby for my son. However I see what the value of Elway and Marino Gem 10’s sell for and think I see opportunity to increase my kids card kitty by opening it.

Can anyone point me in the direction of what to do here? Is there an unwritten rule or formula for box value, when to open and when to resell? Or how many gem 10’s on average come out of a box that old? Any help would be appreciated. Thank you all! CD