MAC Sellout is a warm pink with a luminous finish that is permanent and retails for $22.00. In comparison, Natasha Denona Sava (21P) is a warm pink with a satin finish that is permanent and retails for $25.00.
Natasha Denona Sava (21P) is 80% similar — it is less shimmery, more muted, warmer, less glossy.