"Typical deployments for the caching appliance serve ~5Gbps of traffic at peak to viewers and require a nightly off-peak fill window, where new content is downloaded, that allows ~5TB of data transfer. For example, 5Gbps of transfer for 2 hours. Keeping new content at the edge is critical to caching efficiency."
So in order for this appliance to work, you need to be able to provide a window for 5TB to be downloaded DAILY.
That pretty much rules out its use for us, as that exceeds our upstream transit. Going to see how they plan to rectify our ability to get "Super HD" and 3D content since their box isn't capable of running here. They want to suggest a peering arrangement, but that is impossible at our location.