Image means alot. First impressions mean alot to. Alot of what the military does is image related. In fact, bootcamp is basically all about uniform inspections. Check this out too, its so funny and true, 2.
Very little of what the militia does is image related, because, basically, they just don't care. For the most part, nobody even knows that they are around, so wasting time on spit and polish is pretty senseless. Every once in a while, a group of more PR minded people in one group or another will put together some literature or something, but for the most part, the only ones you see or know about, are those who aren't doing anything except thinking about how important they are.
Uniform inspections don't exist, because some show up in Nam era tiger stripes, some in surplus E. German or Soviet, some in woodland camo, some in hunting gear. It's all about what people have and can afford.
It would be rather silly to impose mandatory expenses on members of the militia who choose to participate.
I get the feeling that you don't really have a good grasp on who, or what, the militia is.
You aren't a member of A militia. You are a member of THE militia. Just as when you sign up for the U.S. Army, you aren't joining AN Army, you are joining THE Army.