I don’t know if you’ve got a book about Singapore but it looks like it might be a mite more expensive than what you’re used to. This website has some interesting ideas for all day walks and food discovery, etc. It has a hostel too, at S$18 per person a night. That’s around £6, I think.
Somewhere on this site, it mentions the Newton Food Centre. That sounds like the sort of place those pies might be found! As I remember, it was underground, in and amongst many other stalls, with seating areas.
There’s also a bit about digital cameras. Apparently, they’re half the UK price.