Yesterday, the club had horrendous IT problems which saw the ticketing system along with internet and email go down for a while.
City's Ticket manager Stephen Ebanks said to the club website: "The system was down for a few hours so it will have only affected a handful of supporters. "In the interest of fairness to those fans we want to keep the lower price active for most of today to allow them to buy their tickets in advance of tonight's big match."
If you get a ticket before 5.30pm, adult ticket prices start at £19, concessions at £10 and JSBs at £6 with special family tickets available with adults from £16.
Tickets are available from the usual outlets.