If it is indeed in stock for sale to anyone who calls or places the order why was my pre order not filled? That was all I wanted to know as other companies did not put out that they had it in stock - because they are currently filling pre / back orders only. If Adorama actually had it in stock and sold it then they did a great disservice to the customers who are on the pre order / back order list which used to include me. If it was just a marketing ploy then all it accomplished was a lot of traffic to their site and possibly the ire of any true customers who already had forked out the nearly $12,000 cost of this lens.
It is a complicated process; just because the item(s) show in stock on the web doesn't mean they are in stock on the shelf
at the DC. There countless variables; possible inventory cycle count adjustments or discrepancies, damage during any one of the steps to complete your order by a picker or packer; an item could have been stocked incorrectly, mislabeled by the vendor, or a category which covers every other eventuality, known in the business as 'shrink'.
When items are scanned in to our computer system, they are shown as being 'in stock', but with high demand items, frequent delivery and dispatch times mean that items can come in one door of the warehouse, be packaged, and out of another door within a couple of hours, so real time inventory on the website is often not possible.
The 'spiders' that trawl the web on behalf of CR - and other affiliates - pick up the in-stock notification and post it on their respective websites, but they can be hours behind the true reality of the situation.
As I said above, the ONLY accurate way to obtain up-to-the-minute in-stock info is to call in to the Sales Department - NOT CS. (and even then, with around 5,000 units arriving daily, there could be a pallet full of units awaiting re-stocking, so the stock situation could change minute-on-minute).
One thing I can promise you; ALL pre-orders are filled in the exact order in which they are received.