Amazon still says as of right now that selling anything e-cig related is expressly prohibited. They actually go out of the way to be very inclusive about that.
Amazon.com Help: Tobacco & Tobacco-Related Products
Examples of Prohibited Listings
* Electronic cigarettes and related products, such as:
o E-cigarettes
o E-hookahs
o Electronic pipes
o Electronic cigars
o Nicotine nebulizers and similar products
o Accessories for such products, such as:
+ New and replacement cartridges
+ Atomizers
+ Smoke
juice or similar refill liquids
* Nicotine inhalers or nasal sprays
* Smoking cessation products that have not been approved for sale in the US, such as:
o Tabex
* Products, including without limitation, hats, t-shirts and lighters, with cigarette or smokeless
tobacco brands or logos
So if those listings don't stay up long. Just sayin...