Offered at some $20.00 on the back of the trading card packages was this nifty thing.  A typical folder (or trading card) binder, it came with enough nine-sleeve plastic pages to hold your entire collection and your promo cards.  In addition, it came with a sheet of six uncut cards in a full single sleeve page... so you could keep it safe after taking it out and looking at it.  Or something.

Other than that, it's white on the outside with images of Aki and the Deep Eyes.
 

Getting ahold of one of these might be tricky.  However, I have no proof that Comic Images has sold out of them, so they are worth a try at least.  Other than that, I have seen them for sale around the web....