Been watching intermittently all day on the Canon refurb site. Earlier, the 70-200 IS II was showing as out of stock. Now, it does not show up at all....
The problem with Canon refurb gear is stock. Everyone tracks that store page, and when there is a 15% or 20% off sale, L-series glass disappears in minutes. The gear is effectively new and you see deals like a 70-200 F/2.8 IS II for $1600 or a 24-70 II for $1500, so it's easy to understand why this happens.
Fortunately, there is a site which simplifies this for you. Go to http://www.canonpricewatch.com/
and setup an auto-alert which pings you via e-mail when gear you want (new/used/refurbished, up to you) surfaces below a price threshold you set.
But a sale like we just had was crazy. 20% off of $2,000+ items like the two lenses I mentioned plus the discount for being a refurb is an awesome opportunity. Keep your eyes peeled for more like that one -- sometimes the 20% off is still in effect over a window of time, and 2-3 sellouts and restocks might take place over that time. Again, alerts are the way to go.