Hello. I just want to announce that the Card Manager is available on URTournament.org's members area.
It allows you to update your entire collection (20 cards at a time), and gives stats as to how many cards your missing, how many extra (duplicate) cards you have how many Unique cards (no Dupes).
You can use it as a checklist for your collection.
Also, you can share a list of the cards that you have to sell or trade.
Check it out. It helped me discover I was missing 7 not 6 Cr cards -- but now I know and I can keep an eye out for them.