I got a refurbed Cisco X2000 [amzn] ADSL router / wireless access point for cheap from Adorama, hoping to combine 2 networking boxes, and reduce clutter and power a bit. It comes in at 3-4W, and has an efficiency Level V wall wart, so that part’s all good.
Edit: Everything else is bad! Don’t get this device. Really. It’s the buggiest piece of junk I’ve had the misfortune of trying to run on my network. I’ll leave the rest of this post here for posterity.