It shouldnt be possible in theory, as the only people allowed to list are ST holders, and only their own seats. How does your friend know unequivocally that they are his seats being re-listed, and not two seats in the same block? AFAIK the seat numbers are not listed on the site.
Anyway despite that you have a point, there is an opportunity here if you are a ST holder of dubious moral standing and you see face-value seats on Stub Hub for Cat A matches: Buy those ones then sell your own at a profit.
Anyway despite that you have a point, there is an opportunity here if you are a ST holder of dubious moral standing and you see face-value seats on Stub Hub for Cat A matches: Buy those ones then sell your own at a profit.