What happens if I miss my shipping deadline? 03 May 2023 14:08 Updated It's important that our buyers receive their order in a timely manner, especially around the holidays. So, once an item has sold, the seller has strictly two working days to send it to our authentication centre. Failure to meet this deadline will result in a £15.00 penalty fee and any future delays could result in further fines and a potential ban from the site.