I read previously about "dynamic pricing" whereby a product/tickets may go up and down in price depending on demand. So, for instance, tickets that are in high demand will go up and up until, presumably, demand lessens.
To my mind, this is a worrying trend, which will adversely affect people whose finances are limited whilst at the same time benefit those for who can afford to pay whatever price is reached.
I think Oasis is quite good but I can't imagine paying the sorts of sums that some people are willing to pay, however much I liked the band/performer.
When I was in my early teens I saw the Rolling Stones, The Kinks, etc, etc, at the local Odeon in Romford because the prices then were accessible to the vast majority of people.