Board Thread:Question and Answer/@comment-202.58.236.46-20150626072710/@comment-7620285-20150626140727

actually "Deck Cost" is the term used in the shop, but the Barracks uses "unit cost".. but they mean the same thing

Card Limit is the term for your inventory limit, so just be careful if you're planning on buying from the shop. finally, most ppl don't read the message but after you buy the item you still have to go to your Item -> Special Items menu and use it.