MAC A Killing Smile is a neutral fuchsia with a satin finish that is limited edition and retails for $19.00. In comparison, Chanel La Merveilleuse (347) is a warm fuchsia with a matte finish that is limited edition and retails for $45.00.
Chanel La Merveilleuse (347) is 90% similar — it is darker, more muted, warmer.