I've bought Pliobond from Ace Hardware at Novena Square before it was closed. If you still can find Ace Hardware somewhere else in Singapore, you probably can find Pliobond. If you are using it for glueing leatherette of cameras, I have used commonly available contact adhesive/cement with success.
I have used the yellow can "Dunlop Contact Adhesive" from hardware stores and some "Deer Brand CA" from Sim Lim Tower for glueing camera leatherettes. I believe most of the yellowish gluey and smelly(can get high from smelling too much) contact adhesives are more or less the same stuff.
By the way, one has to be careful while peeling off the leatherette, whether it was still held by original factory glue, pliobond or CA. All three can bond the surfaces rather strongly.