Aldi's mystery boxes have been selling out quickly. The boxes are available to customers on a first-come, first-serve basis. This means that shoppers need to act fast to get their hands on one.

The boxes are only available while supplies last, which doesn't seem to be very long given the fast sell-out rate. For those interested in purchasing a mystery box, further details are available from KTSM 9 News, including tips from Aldi on how to secure one.