Add in more features to sort and filter Pokemon card collections

You can filter by Set already.  Choose the trading card category "Pokemon Cards" to limit your collection to only Pokemon Cards.  Then choose the "Filter By Set" dropdown to choose a particular set.

Good suggestion about filtering/sorting collections by rarity and foil too.

I would just like to sort by collection and number an to add a copy of a card with out listing the cards twice so when you click add another copy it just ups the quantity of the listing you have

Thanks for that suggestion. So you'd rather the "add another copy" feature would just increase the quantity available for that item instead?  

If you click on an item in your collection already and then click "Edit", you can change the quantity there.  That might be a work around until we implement the change you requested.