Couldn't be too much. Kalamazoo Vapor shop and Mister-E Liquid are little stores here in MI and I am ecstatic that both of the Brick-and-mortar stores by me have jumped in right at the start. I have talked several times in person, on the phone, and in email with Dan and Dave, and will have to talk to them about this later today when i stop by.
Perhaps it is a scale based on volume of sales. Perhaps it is free and funded by another organization.
It would be an interesting question to see answered. You can NOT make an organization such as this and make EVERYONE happy. I do agree it would be detrimental to vaping in general if the fees cause small vendors to be shunned for not being able to afford the gate fee. The concept could assist in self regulation that gets adopted when the government regulation eventually gets here. I didn't read everything as I don't have enough time yet.
Aside from links, I don't see CASAA as I would have expected. Are these organizations not linked in any way?