It's not often I purchase from brands not sold at Sephora, but when I do, it's because I really believe the products will be up to par and worth the venture.
Inglot is a brand started over 30 years ago (!!) in Poland, and they expanded internationally in 2006. Their products are used backstage at anything from fashion shows to broadway musicals, boasting the most extensive collection of colors I have ever seen in a makeup brand. Their eyeshadow options are endless and a bit intimidating. Numbered naming may be efficient, but is a bit of a challenge to us lesser beings. I placed a small order to give them a try and dip in my toes. The single one-color shadows are currently $7 USD each. You can also order them with palettes of varying sizes, but I went for just the singles.