The high design demographic in this instance does not add up. There is NO substance, ONLY style. People who buy high design products are NOT stupid. These are after all just low quality decks of playing cards. Its not home decor or personal attire. High design product pricing has as much to do with the quality of the product as it does the design. These don't look to be manufactured by anyone we would consider an industry standard of quality? I just don't see it.
I'd be willing to wager that the Bucks used one of two possible companies to create the decks (maybe not the MagikPaks but at least the tuck boxes inside of them and the cards in the tucks) - USPC or Expert PCC. To date they've used nothing but USPC, but they are on the Board of Directors of the Conjuring Arts Research Center and have close ties to Bill Kalush. In either case, the quality wouldn't be shoddy, for the most part. A pack of cards doesn't need to be dipped in gold and encrusted with diamonds to be a quality deck.
Remember the Alexander Wang all-black PVC deck of cards? Those were made by Brahma Playing Cards out of Mumbai and the quality, while not the absolute worst, wasn't something to proudly write home about, either - I obtained a sample when I ordered a bundle of sample decks from the company. Those decks in the fancy packaging sell for $55 a pack!
http://www.alexanderwang.com/shop/objects/shop-objects-collection/910007/playing-cards The quality of the cards wasn't the big deal - it was the slick design and the brand name, period.
And believe it or not, yes, these decks would be used as home decor. Place them on a shelf, a mantle, a living room table - suddenly they become design accents. It would not surprise me in the least if some of the people buying these decks were doing so because the colors and/or shapes would look just right with their living room ensemble of designer seating, lamps, shelves and tables.