The one thing that I don't like about the school I want to send the kids to next year is that they have uniforms. I have a wardrobe for both of them packed up for the next 3+ sizes from clearance sales and hand me downs from friends. Very inexpensive. It is going to cost a lot for us to keep them in nice and clean uniforms. DD will put holes in her pants all the time.That is small compared to the problems at their current school though.
Does the school require you to buy from the uniform company, or are you able to buy items anywhere (such as navy pants, but no brand specified)?
Our school requires that the pants, shorts, jumpers, skirts, ties and embroidered polo shirts (spring/fall only) come from the uniform company. Gym shirts & sweatshirts are from the gym uniform company. For those items the school has a used uniform shop. Jumpers are $5, as are the pants if I am lucky enough to find some that aren't worn in the knees. I did end up buying new uniform pants for DS but the jumpers look like a good value for DD for next year. I'll buy her white shirts (for under the jumpers) as I see them on clearance this year. At least we knew the uniform requirement early enough that I can limit my buying ahead on clearance to just what we need for after school & weekends.
Hopefully, if you only need to follow color guidelines you'll be able to find good sales for what you need.