I don't always automatically relist fixed price listings. I sometimes end them prior to their "30-day end date" so that I can list other items or to refresh my inventory. The bottom line - if you see something you want, please don't wait until the last minute.
I have hundreds of Pinbacks listed. Buy as many of my listed patches and/or pinbacks as you want, PUT THEM IN THE CART AND REQUEST A TOTAL. I will only charge one Ground Advantage shipping fee regardless how many you order. That is usually less than about $6.00. Order one, postage is about $6.00. Order 35, postage is about $6.00 (If eBay won't allow you to put them in the cart and request a total, I will refund excess postage paid). Each of my listings for these has "pb" at the end so they are easy to search for in my listings.