In the luxury world, value is tied to the extras. Bags that come with the original box , dust bag , and authenticity card (for brands that use them, like older Chanel) hold their resale value much better than "bag only" listings. Spotting the Red Flags
Never buy from a site that doesn't offer a lifetime authenticity guarantee or a clear return policy if the item is proven inauthentic.
If buying pre-owned, read the condition reports meticulously. "Excellent" on one site might mean something different than on another. Look for mentions of "corner wear," "hardware scratches," or "interior odors."
Sites like Net-a-Porter , Farfetch , and Mytheresa partner directly with luxury houses. Buying here is identical to walking into a flagship boutique; you receive the original packaging, dust bags, and a full paper trail.