I still intend to snag Babydoll probably within the next year and I am hoping that during that time, Amber will have dropped a bit in price. Personally I cannot see her becoming rare by any means.
Price drops only last during the early stage of a HT release... after those months, they shoot right up. A year will surely mean you're going to pay well above retail.
She has the same expression as on the proto pics. Nothing really has changed that I can see. I think it looks great and I'm glad I had it preordered from the beginning. Can't wait to receive this!