I think AgingYouth has got some good points there.
For audience to pay higher, there will be expectations too. Audience will expect better music, better bands and everything will have to be better than we are having now. Otherwise, what makes it deserving to pay a higher amount for the same bands and shows which the standards remain the same?
Audience culture and education is evidently missing somehow. Most times, we do not mind paying S$8.50 for a weekend movie tix, but just to pay an extra $1.50 with a free drink for something that we "proclaim" to support very much, we are complaining about it.
For better stuffs, bands will have to sit back and figure, can they improve themselves? If they fail to improve themselves, how can they expect to play for free or even get paid to perform? It's harsh reality in entertainment business. You fail to deliver, you are left out.
Some bands will start complaining that they ain't given a chance. Indeed, chances are not given to bands who don't improve. If a band is not making the best use of the opportunity presented to them all these while, isn't it better to give up that slot to another band which could benefit from it? Even if the organizer gives you the opportunity and you fail to deliver on stage, do you think the audience will take a second look at you?
Perhaps I can suggest something along the line of - bands/musicians do not pay to play, but they will have to sell tix to cover the cost they are supposed to pay for performing.
Example; if the cost originally is $100 per band, the first 10 tix at $10 each is compulsory to be sold to cover for the booking fee. They only earn a small commission from the 11th tix onwards. Technically from a business point of view, we present a show to earn the profits from audience, not earn profit from the bands. Then it comes to the point, how do you attract that amount of audience to substantiate the earnings?
My head will be thinking about this... if I do think of anything, I will post again.