I love my wonder clips too and have had a couple of my girlfriends fall in love with them as well, I told them I use the clips 99% instead of pinning pieces together. Pinning moves my fabrics just enough that they maybe a tad off at the seams I want to match, the clips are secure enough that you can clip the pieces and open them before you sew to make sure the seams are exactly where you want them. I had the small package but when I had a 50% from Joann's I bought the box full - 32 I believe. Love them!