Stores in singapore that sells 2nd hand cameras?

Hello can anyone tell me what trustworthy stores in singapore sells second hand cameras because i want to buy a nikon d3100 and we all know that dslr's are pricy. And yes i'm a newbie. I'm planning to buy from cathay photo they're very trustworthy but they only sell brand new stuff. So can anyone please rec some stores with slightly used cams. I'm a tourist yep and we'll be staying there for 4 days only.

HI ARE THERE ANY PAWN SHOPS OR SECOND HAND STORES THERE?

Yes
Plenty of pawn shops all over town.

Try cash converters.