I spend a fair bit for multi-day stuff, but most of that is bedding, shelter, and first aid/emergency devices—shit that matters. Much else is dependent on bushcraft and resources around me so I don't have to carry gear like some numpty with no clue. Flint, a good knife, and a container get you really far if you know how to use nature around you and are the kind of person that doesn't have to have a fork to eat food.