First - Welcome to ECF and Thank you for the contest . . .
Now - After looking over your website, I find "Your" marketing strategy very interesting, especially using a current and already popular "Catchphrase" - "Orange is the new . . . "
(Hopefully people will not get tired of it) and getting people to register for "Your" website to get a lower price . . .
AND - Thankfully, although the website can be quite overwhelming at first - especially with all the different Manufactures & Types of "E-Liquids" and Products - It is nice to see that there are more then enough ways to "Find" a particular item of interest . . . Be it the drop down menus or being able to use the "Shop By" option to chose a narrower selection of items . . .
Lastly - Other than the other suggestions already made such as: Age verification; Making very clear why there is a difference in pricing
(Extremely important & necessary to do ASAP); Moving the option "Show per page" to the top, and providing a link to "Your" website in your signature line
(BTW: would have made "You" one to insert there, but I cannot download your banner from the website), might I suggest 2 things 1) that there is a "Drop Down Menu" for each category on all the pages and 2) Provide a separate link at the top of the page in the title bar to "Shop By" option that you have on the right side of the Hardware/"E-Liquid" pages . . . Just a thought . . .
OH - As for a picture of a Cube with "Vapor" around it . . .
Well - Here are 4 Cubes for Ya' . . .
Talk about over using a popular "Catch-Phrase" . . .