When a SAM is being used to continuously buy/sell an online resource, such as network bandwidth or electricity, we can not only distribute the devices into the network where this resource resides (which might be in an untrusted and dangerous physical location), but use the devices to directly execute the result of the deal.
When a SAM is used for off-line auction, it greatly reduces I/O bandwidth and eliminates the delay for the round-trip time for feedback and bid submission.