These beautiful Art Deco style shells were designed by Holly Jasvins. Yes, you are getting two for the price of one because they are so similar.
If you dislike overstitching, Deco Shell 1's path might be more for you, but the backtracking on Deco Shell 2 has been kept to a minimum. Regardless, these are both beautiful designs that stitch quickly, which is definitely a win-win in my quilt studio!