In the UK I still think Marks and Spencer (M&S) offer quality clothing at reasonable prices. They don't compete fully with 'fast fashion' prices but they have been affected by competition from other fast fashion retailers by offering their own 'value' lines.

If you avoid the cheapest clothing lines at M&S, their mid-priced clothing is generally of longer-lasting and better quality.

For example, you can buy organic cotton chinos and jeans in the price range £25-35 (approximately $35-45/€30-40). These are reasonable prices given the premium typically charged for organic clothing.