2 x London Brussels Eurostar tickets for sale 30/08 to 02/09

Two tickets leaving London St Pancras at 17.04 on Thursday 30th August, arriving Brussels Midi at 20.05 (local time), train no. 9148; and returning 16.56 on Sunday 2nd August, arriving London 18.06, train no. 9149.

I can no longer make this trip due to work commitments. Face value is £308, I will take any offers!