Who is the most valuable bratz doll?

For me, it is Bratz, Jade Treasures, But price depends on who is Bidding, and how many bidders. I got Jade Treasures New in Box for around New Zealand $290 , but Have Paid New Zealand $400 Each for Bratz Live in Concert, Nevra and Jade. I heard a figure of $600 Mentioned, being Paid for a Bratz , a number of Years Ago, but think about $400 would be the Highest Price, now, being 2016.