i bought my jelly case at sls level 5, near the esclator.
got black, red, pink, lime green, purple, light blue n white.
one for $8, 2 for $12.
Got hard back casing too.
Black is sold out unfortunately, but my quick check on the white jelly case showed that the holes weren't cut very well, and some even seemed misaligned. I think it was the earphone hole IIRC.
There's another shop near the central elevator on level 4 called Orient. They have a variety of hard back covers ($15), TPU cases ($15) and hybrid cases (half TPU, half plastic with a built in kickstand, $18).
I ended up getting a translucent grey TPU case from there. It fits well, but I have 2 minor concerns: the earphone hole is a bit too small to fit larger sized jacks like those you find on Shure earphones (it's kind of a loose fit) and the case protrudes slightly beyond the bezel, which might be annoying when using the extreme left and right sides of the screen.
I tried the hard back cover too. It doesn't protrude past the bezel and has a nice matte finish. Pretty decent if you don't mind leaving the top and bottom of your phone unprotected.