For Gear You have to Shop around, many have different Shipping fees, some are free, or with a Min $ order, I have of a list of about twenty in the states, and there are a couple in China if you want to wait a few weeks, The cheapest I have found that are reputable here are,
101 Vape
Vapor Beast
Ecig,com
Code 3 Vapor
Vaporrange
Wake and Vape
Origen Vape
Sweet Vapes
Ecig City
Ecig Avenue
Element Vape
Eciggity
Elev8pe
Vape Royalty
These are just a few I have had good luck With, If you know what you want you can go to Vape Crawler and it give you the places and prices they have also a great page here is the Deals and stales thred, I also check with Vape deals,com for some great deals of the day. These are mostly for hardware though, I don't buy much juice any more since I started DIY.