Sorry if this has been discussed already, but I couldn't find it:

The budget screen shows a lot of line items, but not individual costs by either province or by army stack. Its all too aggregated, and not useful to deciding which units to disband. I can go through and manually add up unit costs, or just use the general "knights cost more, militia cost less" finger-to-the-wind approach, but for a game with so much nuance, I think I must be missing something, especially since the game DOES show you good detail on province revenues. Ideas?