is it worth it?

RAW only comes to London twice a year so If you want to be part of the attmosphere that we in England very rarely get, then any seat is worth the price, especially for £25, there are very few events at the O2 that are less than that price. Also no matter where you sit in the O2 it's always a pretty good view. Plus I think the Draft is on that particular night so you get an extra hour and Smackdown superstars (although knowing the WWE they will probably change the date).