[Mass Combat] Cost of raising logisitics forces

[VariousRen]

My DM and I have been looking through Mass Combat in preparation for the next few sessions which will involve finding and raising troops. The logistics costs seem unusually large, costing 5k for every thousand the troops cost to maintain. Because most troops have a maintain cost equal to 1/5 their raise cost, the cost to raise the logistics forces is equal to the cost to raise the unit itself. In the swamp (where some of the fighting will take place) the maintenance cost is doubled, so the logistics force will cost twice as much as the unit itself to raise.

This all seemed a little high, and I wanted to check that we aren't missing anything important about how the logistics force is raised and functions. Additionally, are mercenaries subject to logistics concerns since they are "maintained" properly but instead paid in cash?