Since facebook stopped sales of vape stuff less folks have been ripped off. Although there may be some good groups on FB, it's social media and for most of us who can't be dealing with drama that comes with it.
Here is the best place to buy and sell IMO but first you need to stick around and contribute. Folks will then get a better idea about you and once you can use the classifieds section it makes it easier to sell. We have all had to do this. Thing you cannot do is Flip, Flip is buying something then trying to resell for a profit, most vape deals are passed on so if someone tries to flip a mod will be after a chat. The other rules are all in black and white at the top of each section in the classifieds.
In 6 years i have never had a problem buying from anyone or with a sale to everyone, it is a good bunch on here and a fair few with a wealth of information. It is also Men and Women mixed in age ranges so not everyone has a beard or painted on eyebrows.
What i mean is this forum isn't like facebook groups, some of those FB groups where terrible, here all are welcome, hope you stick around and not just for the classifieds.