I live a stones throw from KL Sentral, but don't know of any vape store nearby.
If you find any please let me know.
The juice stores I do know are:
Vapebrothers
Legadget (has two or three store locations indicated on their website)
Do a google search for either. Sorry I'm not near a computer, posting links is almost impossible with this Blackberry.
In any case you'd need to get a taxi. They are a good 30mins drive away.
Great stores, friendly folk, free tasting a the juice bar.
Local juice goes from RM50 for 30ml, imported RM100 ml for 30ml.
No vape store in Phuket yet?