DS doesn't have to wear uniforms. I get all of his stuff -- and I mean, ALL of it -- from Old Navy online. My list for the fall is 5 Polo shirts, 3 button-down shirts, 6 t-shirts, 1 pair of denim shorts, 1 pair of khaki shorts, 2 pairs of jeans, and 2 pairs of khakis (one light, one dark). He also will get a new pair of sneakers and a new pair of brown Doc Marten style shoes.
This is in addition to the stuff he already has for summer -- hopefully some of that will still fit and be in good shape by September. All of his fall stuff will be short-sleeved since it doesn't get cold here until mid-November. I buy his winter clothes around the end of October, and that's usually 3 sweaters, 2 sweatshirts, 5 long-sleeved Polo-style shirts, 3 long-sleeved button-down shirts, and another pair of jeans.
His clothes and shoes for each season usually cost around $200.