I've got a collection of Butterfly Art Barbies, new in boxes, never been opened excellent condition. Looking for an estimated value?

Thanks!
Sheri

You can check here:
BarbieCollector.com - Welcome to the official Mattel site for Barbie Collector

In addition to the fine answer above, if yours are the same as those that you will find on the following image search you could click on some of them and see what the prices are.

Butterfly Art Barbies - Google Image Search