HSN.com has two duos on sale for $9.95 each (for FULL SIZED polishes)!
Duo #1: Dancing In The Sheet (deep purple shimmer), Let's Hear It For the Boy (creamy powder blue)
Duo #2: Almost Paradise (pale chartreuse) + Footloose (orange red)
PLUS they have another duo on sale for $19.95.
Don't Tell Mama (mood ring blue/green shimmer)+ Dream a Little Dream of Me (cupcake frosting pink sheer shimmer)