I sold a laptop but the item was lost during shipping. After informing Mercari that the package was lost per UPS i was told that if the shipping info was not updated in 7 days then they would revist my lost package claim. After the 7 days they canceled the order completely refunded the purchaser but only refunded me my sale price minus their sale comission. So even though the sale never happened, they kept the comission and the profit from the claim with the shipper. So be prepaired to get hosed