The band or the venue?
I doubt the band get much say, more likely their management
I'd imagine they both talk about it and work something out.
Neither, it's the agency/promoter that sets up the show. They set the price, then they add on money depending on the costs that the venue charges them for putting on the show, then the website you buy it from will add stupid charges.
Both. They both ask for a cut. Ultimatley, it ends in the promoter hands.
Doesn't matter. Ticketmaster buys them all then sets their own price.
Mastodon, BTBAM, Baroness, Valient Thorr tickets - 20 bucks
Alice in Chains, Deftones, Mastodon tickets - 50 bucks
Albeit the former was in a small theater, I'm still pissed.
Promoters set different prices. The cost to book the band, the venues booking cost and the promoters charge factor in. And then handling fees from ticket vendors. all that adds up to the final ticket cost.