I recently got 200 more of them. I’ve noticed that they’re becoming harder to find and more expensive recently as well. Used to be able to get bulk lots (200, 500, 1000 blades) on eBay but I’m not seeing those anymore
I just added 200 to my stock in the hundreds, and now thinking about placing another hoarder, er, order. GSBs have become virtually the only blade I use, with the rare exception being a one-and-done Feather after a couple days off.