This design (as shown) is available as a 2-1/4-inch pinback button, a 3-1/2-inch pinback button, OR a 3-1/2-inch magnet:
ONE 2-1/4-inch pinback button = $1.00
EIGHT 2-1/4-inch pinback buttons (all of this same design) = $3.00 (that's 38 cents per button!)
ONE 3-1/2-inch (BIG) pinback button = $3.00
FOUR 3-1/2-inch (BIG) pinback buttons (all of this same design) = $7.00 (that's $1.75 per BIG button!)
ONE 3-1/2-inch (BIG) refrigerator magnet = $4.00
FOUR 3-1/2-inch (BIG) refrigerator magnets (all of this same design) = $8.00 (that's $2.00 per BIG magnet!)
(All of these options are available to choose under "SIZE" below -- so, if you want eight 2-1/4" buttons in this design, choose QUANTITY 8 x 2-1/4" buttons in the "SIZE" menu, and then put quantity one of that "size" in your shopping cart.)
Rainbow Peace Sign (207d)
...on the button's "curl" (either upper or lower edge, just outside the face of the button that's visible when it's viewed from the front). In 2016, for purposes of selling buttons at Dem-Party-sponsored events, this was usually* considered an acceptable alternative to having a union "bug" on the button. Hopefully this will continue to be the case in 2019 and 2020 (although as devoted as the Dems are to suppressing/silencing us Bernie folks, who can say??!).
* Of course, in the final analysis it depended on the personality of the event organizer. But most of them eventually concluded that, in the absence of a volunteers' union (LOL), they'd concede the validity of LABOR DONATED as an option.