For Buyers

1. How do you determine authenticity?

    At Sellier Knightsbridge we pride ourselves on being the UK’s fastest growing luxury reseller for pre-loved super-brands. All of our items go through a rigorous authentication process which includes a detailed examination by our team of authenticators as well as a third party microscopic authentication technology. Authentication is extremely important to us and it is for this reason that we offer a money back guarantee if any item sold by Sellier is later found to be anything other than 100% authentic. 

    2. Where are your items consigned from?

      This is understandably a question we get asked a lot. While we cannot list each consignor, our items are consigned from a combination of high net-worth individuals, leading fashion stylists as well as retailers looking to discreetly part with superbrand stock. We are, however, in no way affiliated with the brands that are sold on our website and cannot source new products. 

      3. What is the returns process?

      As Sellier Knightsbridge is a consignment store, all sales are final. Like other luxury resale platforms, the items we sell belong to private consignors and not to us. As such, we do not offer returns or exchanges.

      If you are unsure about an item, we suggest coming to the store to view it in person or contacting a member of our team via Instagram, phone or email for extra information.  

      4. Do you ship internationally?

      Absolutely, we ship worldwide! Any international deliveries are placed safely and with care through DHL Express on the same day the order is made. Note that some international deliveries (particularly those of high value) may incur customs charges which are outside of Sellier Knightsbridge’s control. Any customs charges are the responsibility of the buyer and payable solely by them.

      5. How often do you receive new stock?

        We receive new stock on a daily basis but this is usually a bit of a lottery as we never know what we are going to get! Usually, new stock will go straight to our Instagram stories and website. This means that a lot of our stock never makes it to the shop floor as it gets snapped up shortly after we upload it. 

        6. I found something I love but it is not my size. What do I do? 

        Each item we receive is unique. This means that we cannot guarantee different sizes of something on our website.  

        7. Can Sellier Knightsbridge source items?

          We do not offer a sourcing service. The items we sell are brought to us by private sellers. 

          8. I missed out on something which I absolutely loved. Can I put my name on a list if it’s available again?

          Our most desirable items usually sell within minutes of us posting them. Because of the nature of Sellier Knightsbridge’s business and each of our pieces being unique, it is rare that we receive a specific item more than once. As such, we do not have a running list but rather suggest you keep a regular eye on our Instagram and website. If you see an item you love, be sure to read the item description and strike fast as it may not come up again! 

          9. Do you take reservations of certain goods?

          Unfortunately, the sheer volume of enquiries we receive for popular items means that we are unable to take reservations or operate a wishlist for specific items.

          10. Condition Guide

          We use the following condition grading for the items we market.  

          A. Store Fresh

          Item still has all plastic seals (if applicable)
          Absolutely no signs of wear
          Is a full set & accompanied by original purchase receipt

          B. Pristine

          Item still has some plastic seals (if applicable)
          Absolutely no signs of wear
          Accompanied by purchase receipt but not full set

          C. Excellent

          Item is unsealed
          Item has almost no signs of wear
          Box or dust bag not included

          D. Very Good
          Item shows some signs of wear such as lightly worn corners, light scratches and interior wear

          E. Good
          Items show moderate signs of wear such as worn corners, moderate scratches and interior wear.

            F.  Fair
            Item show signs of heavy wear such as worn corners, significant scratches or interior wear.


            11. Who owns Sellier Knightsbridge?

            Sellier Knightsbridge is the trading name of Sellier Ltd (Company Number 11877014), based at 6 Cheval Place, SW7 1ES, London, United Kingdom.

            For Sellers

            1. How do I sell to Sellier Knightsbridge? 

              We have a couple of options if  you wish to sell a superbrand item on our website. We can take on your item on consignment which we will advertise on our website. Alternatively, we can buy your item outright in cash. Please see our “Sell with Us” tab on our website where you can upload information and pictures of the item you wish to sell. Please note that due to the number of uploads, we will only respond to your submission if your item is one we wish to take. 

              If we accept your item, we will ask for your bank details or PayPal link for sending through payment once the item is sold. 

              2. How are the prices determined?

              We always aim to price realistically and competitively and do our utmost to ensure that we offer great value to our buyers while at the same time ensuring that we meet our consignors’ interests. We price items on a dynamic basis meaning that we always carefully check market prices using our in-house pricing tools to make sure we maximise the value for each and every item sold through us. Our approach to pricing means that we sell stock quicker than other consignment stores.

              3. How is commission determined? 

              Item Value

              You Get

              Our commission

              Up to £1,250



              £1,250 - £2,400



              £2,500 +



              Hermes Birkin or Kelly Bags

              Item Sale price minus £1,850-£4,000

              £1,850-£4,000 Flat


              4. Why is your commission higher than eBay and Vestiaire Collective? 

              Sellier Knightsbridge prides itself in providing an exclusive, professional and caring service to its buyers and its consignors. This means that once we accept your item on consignment, it will be authenticated, individually styled, modeled, advertised and marketed through our social media platforms and website. Our exclusive client base and far-reaching platforms means that we have an incredibly high sell-through rate on items; many of which sell before even making it to our website! We therefore offer consignors a personalised service with guaranteed views of their item and maximised opportunities of sale. 

              5. My item has sold - when and how do I get paid?

              Unlike most other consignment stores, we pay our consignors on Friday of the week their item has sold. This means that you do not have to wait months before being paid! Payment is contingent on the item being marked “picked up” or “delivered” to the buyer. 

              6. Which items are you looking to resell?

              We pride ourselves in being a luxury reseller of pre-loved superbrands. This means that we only accept items that are: 

              • Genuine
              • A recent model
              • In good condition
              • By a superbrand

              7. Which items do you not take?

              We are offered hundreds of products every week and, on average, take only 20% of what is offered to us. Ths criteria for us in taking on an item is that it is a recent superbrand item in good condition. As such, we do not accept items that are: 

              • Vintage (e.g. crocodile bags)
              • In poor condition
              • High street items (e.g. Paul Smith, Karen Millen, DKNY)
              • Mid-range brands (Alice + Olivia, Alice McCall, Needle & Thread) 
              • Items bought at sample sales 
              • Brands sold extensively at sample sales (e.g. Mulberry, DvF) 
              • Overpriced consignments - we price competitively to achieve sale

              Europe HQ

              8. Where is the Europe HQ located?

              We are located in Monaco, 47 Avenue Grande Bretagne 98000. Monaco is situated between France Nice and Italy.

              9. Is the European shop the same concept as the London shop?

              Yes, we are exactly the same but in Monaco. You are able to come to the shop and sell or buy any luxury item.