I've just slapped some £1 Primark polish and was so impressed that I needed to write a review.
The brush is really nice, wide and flat and the rectangular top comes off completely, much like a Chanel polish.
I was mainly impressed with the formula. I couldn't be bothered to remove the acid yellow from my toes but this covered it in two coats! It pongs terribly, as most cheap polishes do, but I can overlook that for the lovely shade.
Forgive the quality of this last photo but no one needed to see my feet! The lilac is soft and leans toward the blue rather than pink. It also matches my Primark bunny nails quite well too!