They were actually all on clearance, so if you live near a Hobby Lobby, they might be getting rid of theirs too! The main difference (and difficulty) I had with this round of buttons is that the silver ones were actually metal, not plastic. I still managed to get the backs off with my wire cutter, but mine are old and I would NOT recommend using a pair you value. I sanded down the backs of both the silver and gold buttons with a little sandpaper too, since they were a little rough. From there it's exactly the same: dollop of E6000, blank stud, let dry...although:
I did get a little fancy and glue rhinestones around the edges of the smaller silver buttons. If you're wondering about size, the smaller metallic ones and strawberries are all about the size of a dime, and the larger ones are around nickel size. Have fun, y'all!