[rogerkirkness]

So part of the advantage of the approach is that we integrate with the existing system of the seller. Once they get some volume, we can calculate the following:

* Fill time: time from posting the order to the seller until they ship it as verified by their carrier integration

* Ship time: time from order being placed until ship time

* Complete time: time from order placement to notification of shipment on the consumer side

As time has gone on, we can tell who ships reliably and put those sellers in front of other buyers, etc. So eventually the data we have gives us and buyers and indication of how well vendors are adhering to SLAs around shipping times. Often the expectation is 24 hours, so it's not hard to red/yellow/green people into buckets and manage the buckets. Eventually we can offer our own SLAs for sellers we put in front of buyers but for now we're just gathering data and providing reporting.

Edit: to answer your question directly, we don't currently integrate with them. Generally speaking we can get the same data from the platform we integrate with, so it saves us from having to build N more integrations, but I agree the closer we can get to ground truth the better for vendor SLA.