hi there,
you can look up
www.singaporebikes.com, its the most popular site for the local bike scene. just look under classifieds and you can view the adverts by private parties and dealers(sometimes).
but please be patient with the people there, mostly young guys with a lot of "nonsense", so dont expect high quality advice (on technical stuff etc) other than from a rare few, but most of the time you'll get fed up(like me).
so, just view the classifieds!
btw, i hasnt heard of an ANF125 in singapore, maybe its known by a different model. anyway...come here and look around, many industrial parks with numerous bike shops in close proximity!
all the best and enjoy riding!