The last item I tried to buy did not deliver, which is that seller's fault and not Mercari's BUT Mercari still stated the item as "shipped" even though I canceled it after it became clear that seller was not shipping the item. In honesty, Mercari is a convenient app to sell and buy items very much like eBay. However not Mercari now requires your tax info to be reported if you sell more than $600 USD, and I recommend you do NOT use Mercari unless you plan to only sell $600 or less of items.