So, no, I would not call these Estelle dupes. I believe that they serve different purposes. I will use my colored wine glass set from Amazon for more casual occasions when I just want a fun colored glass while hosting a group of friends. I tend to reach for my Estelle glasses when it is just my husband and myself enjoying a glass of wine with a nice dinner, or when we are having a more tame dinner party. Other than that, when I am hosting what could become a little more wild of a night, I am going to use the Amazon glasses linked here.
I also think the Amazon Colored Glass set would be absolutely perfect for a second home, make a great gift for a younger individual or be a great purchase in addition to the Estelle glasses. While they are fun, they are not over priced by any means. With all that said, I think the Amazon glasses are wonderful for $65. The colors are perfect for Spring! Cannot wait to enjoy all the Rosé and Sauvignon Blanc in them!