Since January the BX 4TC nr XL0069 is offered for sale – See here.
This particular BX has been auctioned back in 2018 and sold in France to the US owner in October that year for 52.800 Euros. Now the car is offered for a price of 144,000 UK pounds.
For more information we direct you to the website.
–> update 14-3-2023: still for sale in the USA, (Connecticut):
At this moment the car is still for sale in Connecticut., USA.
For more information see:
https://www.hemmings.com/classifieds/dealer/citroen/bx/2669320.html?fbclid=IwAR2dC5QOPKhWvWPqgipTxKGGNmHa_uuSsIUQAnQ7FSWDO20CBblO8nMZsj0