e-cigarettes (Ho Chi Minh City)

My first post here, so hello to each and all!

It looks like I'm going to travel to Vietnam for at least a couple of years and there is an issue I am unable to find information on here: e-cigarettes. As my wife 'convinsed' me to stop smoking the real thing. I'm on the electronic cigarette now. I need to buy the liquids and other stuff in relation to the usage regulary.
So - does anybody know if the e-cigarette and accessories are easilly available in HCMC?

Thank you on any info on the subject in advance.

Best