There might have been 50,000 tickets sold (or distributed free) but as the entire upper tier was closed, and there was still plenty of empty seats in the lower tier and Club Wembley, there wasn't 50,000 people in the ground.
We paid £10 for top tier tickets - four individual bookings so seated separately too - and upon entering the ground we were given four tickets together in the lower tier that I think were worth £50 each. Far happier with that than I was with Wires' performance.