No, because "the organizers" don't plan that. Metallica charges a flat fee per show. It's basically that the KL events organizers needed longer to get permits, etc, than the SG event organizers. Therefore it was announced later.
You think everything is all about "cheating the singaporeans"? Did you know that the Aerosmith concert tickets cost 4x more in Manila than it did here? How does that fit in with your useless conspiracy theories?
Ok no worries... is that A FACT is it ?
Better see Metallica official site on that one

