Button size: 3/8" across

We made the card and sewed the buttons on it. 

Would display nicely

I ship my buttons in a 4" x 4"x 4" cardboard box to protect from breakage. I can get up to 5-6 cards in the box. Shipping may remain the same, or could increase a little due to weight-  a great value if you want more than one card of buttons.