I love elf, I was a bit skeptic as well and their shipping was pretty fast. Their eyelid primer is excellent, I use it more than I use my VS and UDPP primer. And with the primer my shadows stay on all day even when I sleep with it still on, on my lazy days. Their quads are very pigmented, my favorites are Punk Funk and Nymph Dreams and I do apply their cream shadows as a base when I use their quads. Their eyeliner pens are my worse enemy, the one I purchased dried up and I had to dip the whole pen uncapped in warm water to get it to work again, I have yet to touch it again. Their regular $1 brushes, work just as well as any other brushes I spent a lot of money on. My favorite brush has to be their blending eye brush, which by the way doesn't look like the scruffy one on their website.
I say go for it.