Anyone knows where to get good and cheap qualit djembes in SG?

Hi! it depends which type of djembes you're looking for.

If you're looking for the Remo types, swee lee and yamaha at plaza singapura are the places to go. If you're looking for the traditional types of djembes, you can get those at a local African drumming school, Lila Drums. You can check for details.