MAC Drop the Robe is a warm peach with a metallic finish that is permanent in palette and retails for $17.00. In comparison, Natasha Denona Glam (334M) is a warm gold with a metallic finish that is permanent in palette and retails for $29.00.
Natasha Denona Glam (334M) is 80% similar — it is less shimmery, darker, warmer.