It's people like you and apple that try to create a false sense of inventory for a product & try to push those on the fence on making a purchase.Give it a few days , will be sold out everywhere...
It's a marketing scheme.
For both the iPad and iPad2 launch, my local Best Buy's had ample stock on launch day and never depleted stock.
They usually do run out of the 16gb WiFi model since it's the cheapest model but other models are usually available.
Best Buy appears to have good relations with apple and they appear to make sure they have the inventory to meet the demand and then some.