I honestly dislike giving reviews on poor quality makeup and I don't want to devote anymore time to this Em Cosmetics Sampler than my review (link) and these swatch comparisons. This is only a glimpse into what Em Cosmetics has to offer and may not be representative of the entire line.
Em Cosmetics smaller pans (16mm), larger pans (22mm), and a typical MAC pan (26mm)
Low End Comparisons
Em Bali Sands, Em Moroccan Bloom, Wet'n'Wild Trio in Walking on Eggshells ($3), LA Colors Traditional ($1), ELF Studio ES in Coffee Bean ($3), Covergirl Single in Taupe Tapestry ($3), Coastal Scents Hot Pot in Cherry Chocolate ($1)
High End Comparisons
Em Moroccan Bloom, Em Bali Sands, Bare Minerals Ritzy (from The Star Treatement), Urban Decay Snakebite, MAC Satin Taupe, Tom Ford Cognac Sable (darkest shade)
Note: The reason why Em Cosmetics eyeshadows are sooo sheer is due to their extremely hard textures which only get harder with use (I would be wary of swatches from brand new palettes, number of swipes, and if over a primer). No primer was used in any of these pictures.