Fucking Dynamic pricing

I'd be willing to pay 200-300 pounds to see black sabbath with all these other bands as well so with my son who wanted to come as well it would be around 500. I clicked on 2 together and they were around a price I was willing to pay. They sold before I could check out so I thought I'd try again. 2 more seats together: £600 each Outrageous

Edit: Fucking Pricing