WWDC was only in June, but as of today we’re already seeing refurbished 2012 Macbook Airs and Pros hit the refurbished section in the Apple online store.
As of writing the Retina Macbook Pro isn’t yet available refurbished, but you would expect it to come imminently to the refurbished section as well.
Offers include a 1.7 Ghz Macbook Air for $849, while the cheapest 2012 Macbook Pro is priced at $1,019.
These won’t last long, so if you were waiting for this moment, act now. Similar deals are available on European online Apple Stores, but what options there are obviously varies by country.