Similar to the Stock Case from earlier. Except a lot more expensive.
April 15th, 2017 Onwards
If you buy 3 boxes of “Code of the Duelist” from an official card store, you get the right to obtain a custom Storage case.
Purchasing the boxes get you a redeemable coupon.
You can get the Storage case from the store in question at a later time.
Storage case is while supplies last.