Amazon.com has rOtring 600 0.5mm Mechanical Barrel Pencil (Black) on sale for $8.37, and rOtring 800 0.5mm Mechanical Barrel Pencil (Black) on sale for $13.33.
Also a few more rOtring on sale. Please refer to the link below.
Shipping is free with Prime or if you spend $25 or more.
https://www.amazon.com/s?k=rotrin…b_