Amazon has a couple of Revlon Colorstay 16hr eyeshadow quads for $2.70. Free shipping with Prime.
Color: Decadent (browns)
https://www.amazon.com/Revlon-Col…006PANUI8/
Color: Passionate (greys)
https://www.amazon.com/Revlon-Col…0105Z23J0/
(Also available via S&S for $2.57.)