Before taking the plunge, read rolygate's
"Want to be a Supplier?" post. It may cause you to think twice.
If undiscouraged, read his
Suppliers Information post. He explains what is entailed with becoming an ECF "Registered" or "Approved" Supplier.
For more detailed advice, consult the experts - not those of us in this subforum - but actual suppliers. If I were doing it, I would approach those in other parts of the world and whose inventory is different from what yours will be. You wouldn't be in direct competition and they would likely be more open to sharing with you their "trade secrets."
And to capture some of the huge market consisting of ECF members: participate actively here ... and treat your customers
great. We are not shy about sharing with each other our positive (and negative) experiences with suppliers. The most successful suppliers are those who have something unique to offer (whether e-cig models,
e-liquid, or low prices)
and provide outstanding customer service.