Welcome to the Pin Lady Store!Each pin comes with a back (or 2).I can combine shipping for multiple pins if you ask. Shipping is 3.95 for the first pin and .50 for each additional pin.Steps to ask for combined shipping: (this sometimes does not work on the mobile app)1. Add items to the cart (auction items will automatically be put in the cart when won)2. Go to CHECKOUT3. Click on “REQUEST TOTAL FROM SELLER”4. Wait to pay until you have the total.If purchasing multiple items, please WAIT TO PAY until you have an invoice with combined shipping. If you have any problems, send me a message before you pay.