Just a 'heads up' comment on this thread.
A while ago (6 months, maybe more) I noticed a lot of people where looking to buy direct from the Kanger retail site in the US.
I looked into the prices, and Kanger were charging way over standard price for most of the products. So, if you are yet to buy anything and are thinking of shopping on the site you linked to in this thread, please cross-check the prices.
It's the same in the UK, the joyetech 'official' site is much more expensive than a joyetech stockist.
That's because manufacturers who wholesale their own product protect their retailers and their brand image by not undercutting their own MSRP, They usually only sell at MSRP (with sales peppered here and there and still the sale price are usually high). The only reason to by directly from the manufacturer (at retail) is to ensure you are not getting fakes. Otherwise, it is a complete waste of money.