Just a note of warning about buying from Toys R US in Causeway Bay. I made a purchase there earlier this week and my credit card was charged by them two times. The same thing happened to me at the same shop about 3 months ago (they charged me in both HK and US dollars, which is what I expect also happened this time). This time they are making it very difficult to get the second charge reversed (for example, by insisting on inspecting both receipts to see what I purchased when the whole issue is that I only made one purchase! and therefore only have one receipt). So, if paying with a card at Toys R US, make sure to check your statements.