Not OP, but it looks like this is the keycaps from amazon:

Japanese PBT Keycaps, 136 Keys Custom Cute Keycaps Full Set, Dye-Sublimation Cherry Profile Keycaps for Cherry Gateron MX Switches Mechanical Keyboard

https://www.amazon.com/Japanese-Dye-Sublimation-Switches-Mechanical-Keyboard/dp/B09ZT39CSS/

($27.99)