Yes, Laura. Zara's supply chain has a 2-3 week turnaround. (They are a vertical operation in Spain). Other retailers take 4 months for the turnaround, unless the fabric is in stock.
Suz, Zara is quite new to the US, and VERY new online to us all. I think that most Americans who have not travelled to Europe and Asia (to see Zara there) are only just discovering it. That may account for their inaccurate perception of the chain.
In my mind, Zara is like a very chic, "grown-up" and sophisticated Forever 21.