Too Faced Bon Bon (Semi-Sweet Palette) is a warm copper with a frost finish that is permanent in palette and retails for $16.00. In comparison, Natasha Denona Atria (107M) is a warm copper with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Atria (107M) is 85% similar — it is darker.