I agree. Other than stating the obvious; that the Red Cross wants to continue to do business, it doesn't really give us an indication of magnitude.
I'm not surprised by this though. Many open-ended agreements like this are on a graduated scale. So much per device, then X amount for servicing the first 100 devices, 95% of X for the next 100 devices, and so on. The more the Red Cross uses, the less the incremental cost. I don't know that this is the case here, but that is my guess.