Superman

Hey.. the link to the superman screening at science center is here. Showtimes for this weekend (sat) are 11am, 5pm and 8pm.. Unfortunately however.. it seems that they charge more on weekends.. $15 loh.. so quite ex.. unless we wanna go on a weekday, but quite rush.. 5pm and 8 pm.. so how?

But i still think $15 is rather worth it to catch the show on the big screen.. 2 hours 40 mins..
so that's $15 for 160 mins.. which would be about $1 for every 10 mins.. or 10 cents a minute.. or 1 cent for a block of 6 seconds.. haha.. you get the picture.. so how? suggestions suggestions..