AT&T Lumia 920 and 820 are now listed at Amazon for similar on contract prices of $99.99 and from free respectively. Lumia 920 is available in all five colors and when I checked some time back all colors were in stock, but on checking now Red, Cyan and Yellow have gone out of stock and are “backordered” now. Off contract Lumia 920 is priced $499.99 and Lumia 820 is priced $399.99.
We can safely assume good going for Lumia 920 nearly everywhere then :), as we are getting similar “sold out” stories from every major market.