Same question. I don't see the answer, so not sure why this is marked "solved"?
The "solved" marker is set by the original poster of the thread. Perhaps, the thread was sufficient for the her needs? There is no specific seller protection verbiage anywhere. Each claim has to be investigated on a "case by case" basis.
On most simliar type of these apps, the ruling is often skewed towards the buyer, but if a seller has 10,0000 five star ratings as a result of shipped transactions from 10,000 individual users (meaning a very good reputation), the ruling might go in favor of the seller.