FWIW, here is Caiman's page from its own web site explaining how its ordering, payment, and shipping works through Amazon. Apparently, it lists items on Amazon that it both has in stock and obtains from suppliers upon customer order. That explains why most items are shipped immediately, while some items take much longer to ship. I don't think the Amazon Marketplace system--at least officially--allows the merchants to indicate for a particular item whether it's in their stock or must be ordered. It appears that Amazon says of all Marketplace items: "Usually ships in 1-2 business days." As evidenced by it's own separate web site, Caiman makes a fairly substantial effort to work efficiently within the Amazon Marketplace system, even providing online tracking of order status and easy order cancellation. That's rather unique among Amazon Marketplace merchants.
And no, this is not a Caiman ad.