Popbuying.com is a store located in Hong Kong, China. It has a huge selecting of excellent products and cool gadgets. It is well known for having the best prices, and free internatinoal shipping, which is quite rare of online shops.
As well as cubes, they also have numerous items such as flashlights, computer parts, electronics, iPod and Nintendo DS accessories. They have buy far the largest selection of cubes in all shapes, siszes, and colours. PopBuying boasts good quality, very competitive prices, fast shipping, various discounts and coupons happening all the time, excellent customer service. They also frequently update their store with new items.
On the speedsolving.com forums, PopBuying Jack is able to answer questions about the site, and is always looking for imput from speedcubers.