Tradition also appear to now have the return hose in stock too:
https://shops.audi.com/en_GB/web/tra...-4d2422891c-10
'mint condition' generally seems to mean they have found them in a box somewhere, but I am sure they didn't have these listed a couple of months ago so perhaps they are making new ones? Usually they use 'brand new' though to describe new production (like the fog grilles).