Most of the regular drugstore brands are buy one/get one half off as usual. So I would use this sale to invest in some items from Black Radiance, Black Opal, Borghese, Tropez, etc. These items aren't normally on sale. Almost a good opportunity to stock up on some Wet N' Wild and New York Color (NYC). They make great shades of nail polish and WW has just released new products and packaging.
Some drugstore products I'd like to try include:
And probably some other random Cover Girl/Maybelline/L'Oreal items I've been wishlisting. So be sure to check it out if you can.