Rimmel's Kate Moss lipsticks are on sale for 50% off at Walgreens this week. Also the Stay Matte foundation is ase well. I have $1 off Rimmel coupons that I found at CVS.. but also the beauty advisor tried to give me some for the foundation (she had them behind the counter). The lipsticks are $2.99 ($1.99 after coupon).
I am not sure about the foundation because I decided against buying it, because I have dry skin and don't like matte formulas..
I believe it is just through Saturday (3/1).. Also nouveau cheap has a blog post about it. I just found it. She has a link to printable coupons for the Rimmel.
Hope that helps!