Where to buy the reMarkable pen only (without tablet)?

I want to buy the “Marker Plus” for the reMarkable 2, but only the pen without the tablet. Where can I find this?

So far all I found were the replacement tips:

You can order the marker on its own without the tablet from the official reMarkable website:


This is how it looks:

Notice that the reMarkable 2, Folios, Marker tips, and Cable can all be purchased as standalone items without bundling them together.