Put bluntly I am riding the Bordeaux Paris ultra random in May for The Childrens Trust Tadworth, and I would love to do this ride in the Bordeaux Paris Jersey. So bottom line if you have one in XL I'll buy it off you, price dependant on condition.
You'll be paying through the nose if ANYONE is going to sell theirs.
Most have done something like this and the same with the jersey. Last one I saw go was around the £150 (worn) you are looking at over £200 unworn. https://pbs.twimg.com/media/Bh1Gk0GIUAAitlt.jpg