Where would I go to get a comprehensive price list for collectible barbies on line. Need prices for insurance?

I need just a price list for my daughter barbie collection so I can photograph them and put the price on the back for insurance purposes. I don't want to buy a book that will be out of date in a year or two. I would like to find a sight online that I can check as she adds to her collection and would be current prices.

ebay would be a good place to start….it will always be current