I plan clothes buying carefully. I have a limited amount of clothes, wearing them frequently, look after them. and replace them when worn.
How much I spend is entirely random. I try to think environmentally and only wear clothes made from natural products, wool, cotton or viscose (made of wood pulp). I have paid up to £100 for a good Traidcraft wool sweater - and bought a beautiful wool skirt second-hand online for £6. I have paid up t £200 for a Harris tweed coat and £40 for a quilted coat in M&S.
As I do not spend a lot on clothes, price is broadly irrelevant.