It damn well should be sold out-it'd be like us reaching a mega stadium in Crawley. How many might we have sold if the game was just up the road? (as has been kinda said elsewhere so sorry for the repeats).
In fairness though, we have 8'300 season ticket holders, so most purchased the maximum amount allowed (thats only 2) and given the few other schemes such as members (about 500) its not that bad.