Resellers don\'t have authentication service. The sellers said they can take the bags to the resellers for checking actually means they go there and pretend to trade bags. If the resellers are willing to offer the trade in price, this is treated as a sign that the bag is authentic. But there is also a slight chance that even the resellers cannot identify if the bag is authentic or not. It\'s less risky if you buy 2nd hand of the brands that you\'re familiar with the products & styles. If not, buying at reputable resellers like Brxxd Off will be worry-free.