When I got my MBA last summer, I remember you could go to Apple's site and select a specific Apple store, then click a link to shop there and you could actually see what they had in stock. That was how I learned that none of the stores in my region had the model I wanted.
Just looked at their site now and it seems like that feature no longer exists. Did I imagine that?Why would they get rid of that feature?
I'm curious to know if you can buy an i7/256gbSSD/8gb RAM version at the store or is it mandatory to order online.
My experience in two Canadian stores is that they only carried some of the 4GB versions and the Ultimate. You should call your specific store.
This has been my recent experience here in San Diego as well. Very few (if any) 8GB models except the Ultimate in stock.