I have just added an ask order for Moneretos as an item

Probably it's better to restrict it. It's a bit illogical (but fun).
The concept of item "M" is new for everyone who was not here in the 1800s. Quick explanation:
- "M" is an aggregation of items containing "resource M", same as HM02B100 is an item that contains 100*resource CKG.
- Currently there is only one such item, also called M so this causes the confusion
- Later, several depositories are needed to hedge risks, so these will issue items "M1", "M2", etc against the XMR they hold in a publicly viewable address
- In the UI side players only see "M" since all these are legal tender
- I skip the brilliant part how robust this system is in the case of any adversity attempted against our world.
So it is intended that you are able to sell M in the same way as you can sell CKG, and if it is too stupid to do, don't do it.