The Kickstarter price was $35 for most of the colors and $40 for the Original color (Beige) and transparent ones.
I guess he's selling for less now since he still has many left.
I bought one Red and one Beige, was not really happy with them.
The Beige is not an exact color match to the original, and the Red had white spots and smears in several places.
I asked for a replacement Red and it took quite some time and many unanswered emails until I received one.
Haven't used any of them yet, as I prefer the original color and have one that hasn't yellowed yet (knock on wood).