>Once you spend enough time on activities which sharpen your visual aesthetic sense, you see a clear difference between mainstream bland models from H&M and Topshop on hand and small designer shops on another and understand why it's worth to spend more on them.

Fair enough, but it makes little sense for someone who hasn't 'spent enough time on activities which sharpen your visual aesthetic sense' to shop for expensive clothes; the result is usually going to be terrible.

you can say this about any single aspect of existence. more expensive food is generally healthier (BIO, non-GMO, free-run chickens, wild salmon etc.), driving more expensive cars tends to transform driving experience from necessary-evil -> OMG-so-awesome-joyful-beautiful-thing-I-want-to-do-for-rest-of-my-life. And so on.

It's all about priorities. Some people, for whatever reason, need to impress others by all costs, appearance including. Hence they dress as they dress. Some consider quality of personality much more important, if appearance is not outright disgusting. Some look at cars in similar way. and so on..

> Once you spend enough time on activities which sharpen your visual aesthetic sense, you see a clear difference between mainstream bland models from H&M and Topshop on hand and small designer shops on another and understand why it's worth to spend more on them.

Maybe expensive clothes are prettier, but there is a hidden assumption in your conclusion, namely, that one wishes to wear clothes that are aesthetically more pleasing. This is not an obligation: you can also not care about it.

Only if you value those differences. I'm not even the type to shop at H&M, so it's really hard for me to see value in boutique fashion.