Hong Kong is a small place, you can visit all seven boutiques including the new one that'll open in Elements Mall (Kowloon) in early September in one day. Kellys are not too hard to find, I think most stores have at least one (even if it isn't displayed, they should have one in the back, just ask!) Birkins are almost impossible to get unless you are a regular customer. But some tpfers have gotten lucky before. But don't go in asking for a birkin right away, do show some interest in other stuff first. =) As for prices, you can check the Asian Pricing thread. What part of the world are you from? Hong Kong is cheaper than most parts of Asia, but is slightly more expensive than Taiwan. Good luck and have fun in HK!