Do Space Marines have treasuries?
For example, a lowly local PDF valiantly died saving a space marine captain, or even a chapter master. The space marine was moved by the courage and bravery and asked how the soldier would like to be honored.
In his dying breath the soldier asked the space marine to financially take care of his family.
How can the chapter master comply? Do the chapter has a vault of treasure like a Rogue Trader?
Im not sure banking exists in 40k, but can the chapter issue a bank transfer or a cheque to the family? Maybe drop a pile of treasure if its a feudal planet?
Do they have chapter treasurer/accountant serf?
Do space marines pay for anything, or do they just show up, drain ressources and leave (even nices chapters)?
Even knights and lords of the middle ages need to worry about finances, and space marines must take a lot of ressources.