Instructions
Determine which specific doll to look at. The book "Rebecca of Sunnybrook Farm" came out in 1903 and there are several dolls made in the likeness of the main character Rebecca. For example, there is a Shirley Temple doll for Rebecca and there is a doll by the Lawton Doll Company. Find out which doll to look at. If the doll is in its box, the information is listed directly on the box.
Look on the company website for pricing. For example, if the doll is a Lawton Doll Company Sunnybrook Farm doll, look at the Lawton Doll Company website and look for the specific doll. The company will have new pricing available for the dolls that are still purchasable.
Look at online auctioning websites. Websites like eBay are invaluable sources of pricing information. They not only give information about the price of the doll with a simple search, but they show prices others are willing to pay for the doll when the doll sells, especially if the doll was on auction.
Go to a doll auction. Doll auctions are available at locations around the country throughout the year. The doll auction will give you an idea of pricing for dolls and what others are willing to spend on the dolls. Usually, older dolls in good condition will sell for higher than newer dolls or dolls in poor condition.