Bought the Akko Cherry Profile Carbon Retro Keycap Set from Shopee for S$58. It is probably the cheapest Akko Keycap set I could find.

These are double-shot PBT cherry profile keycaps. On the other hand, the Keychron Q1 comes with double-shot ABS OEM profile keycaps.

Akko Cherry Profile Carbon Retro Keycap Set - Box Front
Akko Cherry Profile Carbon Retro Keycap Set – Box Front