butter London is offering Buy 2 Nail Or Lip Products Get 1 Free, use code SUMMER17, ends 7/24. It seems to me that kits are excluded but give it a try anyway.

Free shipping with any purchase.

Go to the Sale Page, there are some nail polishes are 50% off. Yes, you can apply code SUMMER17 to get b2g1 free! That makes each nail polish only $3.33.