Not really, as that would assume lots of people don't care what music they listen to/watch and that other aspects, such as work/college, bar prices and transport don't factor in and other events (sometimes other shows) aren't happening on the same night.
For example, I was keen to go down to the show at The Furnace last Saturday but couldn't make it as it was my girlfriend's brother in law's birthday night out. The ticket price didn't concern me, I just wasn't able to be in two places at once.
Personally speaking, I don't really think ticket prices really start to become a deal breaker until you get into the £10 territory for local/smaller shows and up to the £40 /£50 for big arena tours.
If somebody wants to go to a show, I'd say one of the very last deciding factors that means they
don't go is the ticket price itself.