From collectible China dolls to Barbie dolls, these beautiful dolls are not only extremely popular, they are are becoming harder to find in excellent condition. Because of the longevity of this collectible category, there is a lot of investment potential. Some of the 100 year old porcelain dolls have sold for well over $200,000. German bisque dolls have also brought some high sale prices. Whether you want to add new dolls or action figures to your collection, or if you are searching for a rare investment quality find, this is a great place to start.