MAC Sketch is a cool burgundy with a satin finish that is permanent and retails for $17.00. In comparison, Natasha Denona Aubergine (24V) is a cool plum with a matte finish that is permanent in palette and retails for $29.00.
Natasha Denona Aubergine (24V) is 90% similar — it is less shimmery, darker, cooler.