On the same date each month we assemble your box and send you the contents before anything ships: every item, its declared value, and a swap control for each one. You approve it, swap what you do not want, or skip the month entirely. Nothing ships until you say so.
You are never buying a sealed surprise. You see exactly what is in the box, with its value, before you accept it.
Lux Club is the exception, and it is not a box at all: it accrues store credit each month against a future purchase. Nothing is shipped to you under that plan.