I posted something similar on the 'Coventry City Supporters Group' before the Barnsley game. I nearly broke the internet. Full of people who call people scabs etc and end every Facebook post with NOPM. They were not happy!
Grendel has a point. SISU would probably get more money for this game if there is a big crowd than a typical Sixfields game. The away team in the Cup get something like forty per cent. That's why both clubs have to agree on the ticket price.