There have been reports of fake Sanyo Eneloop batteries being sold by some vendors. Based on that I would advise not buying them from Kaidomain, Deal Extreme, or eBay. Do a search for "Fake Eneloops" for more details including photos from other CPF members.
When I bought mine, it was more important to get them from a reputable dealer that knows if they're selling the real things or not. Thus, in the past I've bought mine from Battery Junction and Amazon. Amazon is listed on the Sanyo Eneloop website as an official dealer. Note that I actually bought them from Amazon, not an Amazon member just selling them through the Amazon website.