Well, I bought my tickets for the R. Soc. game a few days ago and it was a struggle to find two decent seats. I reckon it's almost sold-out by now. Also, I saw Barça beat Seville 4-0 at Nou Camp in 2009 - along with 99.000 other people. The big games sell out (at least all the decent seats). Take a look at this from the last few seasons: 16 October 2010 Barcelona 2 – 1 Valencia Attendance: 87,975 14 March 2010 Barcelona 3 – 0 Valencia Attendance: 87,600 19 February 2012 Barcelona 5 – 1 Valencia Attendance: 74,240 If you don't buy your ticket(s) early on you won't get a decent seat, that's for sure...