Walgreens has certain revlon nail polish on clearance for $1.59. They come in sets of two with one color and one clear.

There are coupons for $2 off any revlon cosmetic expiring Jan 9. I was able to use 5 without any problems.

(Revlon Age Defying Makeup Or Any Revlon Color Cosmetic Product, Any $2.00 /1 01-09-2008 Insert 09-09-07 SS2 )