Awesome, thanks.

Not quite.  Perhaps I chose bad examples.  I see and understand the set functionality, but what I'm looking for is a pre-con deck functionality.  Let me choose a different example.  Lets say I went to the store and bought: DRAGONS OF TARKIR EVENT DECK  http://magic.wizards.com/en/articles/ar … 2015-03-18   This is a pre-con deck.  The cards, number of cards, and editions of cards will always be the same.  I want to be able to search for this deck, then hit "I own it" and have all the cards in that deck added to my inventory.

This is, perhaps, something I've missed, but would be incredibly useful and time saving for me at least.

Have all official pre-con decks on the site similar to editions.  Then an option to "add deck" to the inventory.  This way, when someone buys a pre-con deck (duel decks, the commander 2014 decks, etc) they can simply add the entire deck to their inventory and be done rather than adding individual cards.  Because they are official pre-cons, the editions will even be known, so it saves a lot of time.