MAC It's a Great Feeling is a warm copper with a pearl finish that is limited edition and retails for $24.00. In comparison, Maybelline Glistening Coral (525) is a warm orange with a pearl finish that is permanent and retails for $8.99.
Maybelline Glistening Coral (525) is 85% similar — it is less shimmery, brighter, more pigmented, warmer.