Keysy has 125khz stickers, but you need the keysy writer, and it seems those are OOS. I bricked one sticker trying to write a t55xx clean. Now it won't respond to anything. They're not T5577s, so don't try to treat them like them. But they are flexible stickers, and you can get HID, etc working with them.
This is probably your best bet if it is indeed 125kHz:
I've tried the $6 blue chineseum r/W and they rarely work, it's a matter of pure luck if you get a functioning unit AND it works for the specific protocol of your card. I also have a proxmark3 RDV4 and it is definitely a "research" product and not really intended for end-users with only a specific credential to clone (especially given the price). The Keysy strikes a nice balance of value and functionality, it's exceptionally useful for quick copies of HID/AWID protocol cards (very common) and if it isn't right for your scenario, just return it to Amazon.