If you already have a wardrobe of good quality clothes, it's not too hard to replace things occasionally when they wear out. If, however, you have a wardrobe of things which are already worn out, and you replace them with lower quality alternatives, then it's pretty easy to spend that much just on staying warm and dry.
I will easily spend over £150+ a year on shoes, not because I have a large shoe collection but because I don't drive, and walking everywhere wears out my shoes. I buy a pair of doctor martens every year, plus a pair of trainers for sport, plus replacing smart shoes, evening shoes, wellies, everyday trainers and sandals as they wear out. I think of my shoe budget as a travel expenditure as much as a clothing one.
This month, I have spent £30 on a pair of jeans and £9 on a pair of running trousers, but also desperately need some jumpers (all of mine have holes in), and two sports bras. Less urgently, I could really do with a sweatshirt or hoodie, and a warm pair of pyjamas. I try to spend less than £100 a month on clothes and beauty stuff, but right now my clothes shortage means that I'm unlikely to fit a haircut into that budget for many months.