Orders are shipped on the 1st of the month (or the first business day after the 1st of the month). The cutoff for the first order being shipped on the 14th of the month prior. Thus, subscription orders placed after the 14th will not go out on the 1st, but will go out on the 1st of the next month. Monthly re-billing occurs on the 10th of the month. The first order will be billed at the time it is placed and re-billing will only occur in subsequent months (you won't get billed twice for your first shipment).
We cannot be sold out as we have a large warehouse with over 2500 different items that we store for our Minimus.biz business. The items for these subscriptions are comprised of these goods, so we are never sold out.
Our focus is on small items, travel sizes, single serving, etc., so there is always an interesting mix of products suitable to the concept of the particular subscription. In some cases, like the Shelter Support box, it is specific items shipped each time.