Tropez now has a few very nice eye shadow palette available with six shades per palette. I picked one up at Walgreens and love the colors and the luminous quality of them. I also particularly love that the palettes come in at around $5 or less. Below are swatches from the palette that I choose from the Sunrise to Sunset line in Bali Blue:
The shadows have a nice shimmery luminance to them that isn't overdone. They are well pigmented and lasted a full day for me. You can find them at Walgreens and K-Mart stores.