Ok, so the second these became available, I try to buy 2 standing tickets, next page is slow loading and then it comes up 'standing sold out', literally instantly. I really could not have done it quicker. Next option is seats and up comes the Arena plan posted above. I click on 'B' seats, and have spent all day thinking I am in the 'B' block right in front of the stage. I finally check the email properly and see I am in 'Block 107', miles back from the stage. How does that happen? Maybe its just me, I'm unfamiliar with Arena gigs and booking seats in general, and was in a bit of a panic just really trying to get tickets, but I really did think I was getting seats in 'B block'. A bit gutted really, but at least I got some!
That must have been TicketFactory or BookingsDirect, by the time my Ticketfactory page has loaded I had logged into Eventim and bought tickets. You may get a chance to swap or sell your tickets, so you could end up with better seats or standing tickets.