Guerlain Gourmandise is a warm fuchsia with a natural finish that is discontinued and retails for $49.50. In comparison, Obsessive Compulsive Cosmetics Rhythm Box is a neutral fuchsia with a luminous finish that is permanent and retails for $18.00.
Obsessive Compulsive Cosmetics Rhythm Box is 95% similar — it is more shimmery, darker, more muted.