You do realize that Amazon is increasingly becoming an order processing house for people running on-line businesses out of their garage, don't you? It doesn't take much to buy a crate of cell phone chargers from a Chinese vendor and then sell them one-by-one on Amazon. Yes, Amazon takes the order and handles the money, but the guy in the garage is the one who actually ships the order.
When I see Scanner Master clearly state multiple times on their web site that they are taking pre-orders, quantities will be limited, and they don't expect to get their small, initial order until mid-February with a larger shipment to follow 30 days later, I take them at their word. They ain't got none. Period.
When I see "In Stock" in their on-line listing, that tells me that their on-line ordering system has to have the "In Stock" switch turned on so they can take your order. I see no confusion or conflict here. If you are foolish enough to give Scanner Master, or any on-line dealer, your money just to get in line for merchandise they don't yet have, that's your decision.
Time Value of Money - TVM