Sydney Grace Sumptuous Serendipity is a warm plum with a metallic finish that is permanent in palette and retails for $6.25. In comparison, ColourPop Thackery Binx is a warm plum with a frost finish that is limited edition and retails for $4.50.
ColourPop Thackery Binx is 90% similar — it is less shimmery, lighter.
