I personally love the medallion cards… certainly one of my favourite all time chase cards by Topps (not as excited about the patches) .. as there are some that are numbered and far more rare, you may be able to sell an unopened pack for a bit more than a regular medallion card… but not as much as if you opened it and actually pulled a numbered one.
Myself though, I would prefer to see the card being purchased… as the rare numbered ones are nice…. but I would prefer to get one I need vs one with a number on the back.