You might, as I once did, think that you avoid the sustainability issues in fashion because you don’t shop at H&M, Gina Tricot, Dressman etc.
The short answer is no, expensive fashion is not necessarily more sustainable. Luxury production in Europe should guarantee better working conditions and less chemicals, but only a few luxury brands still produce in Europe. Those who do might only produce certain parts of the collection in Europe. And ‘Made in Italy’ can these days mean made by Chinese in Italy. Even when something is made in Europe, the fabric may be imported. Luxury brands often source their materials from outside of Europe and then we have the issues with conventional cotton and synthetic fibre etc.
There are also environmental issues with the chrome and heavy metals involved in tanning of leather. If you do want a new luxury bag, check where the leather came from, that it can be tracked to sustainable farming, and for vegetable tanning. I found that Swedish brand Palmgrens had a longstanding relationship the Italian farm the leather derived from and used vegetable tanning processes for a certain bag. Thus it’s the last bag I’ve bought, before my current year of no-shopping, and I don’t feel I compromised on design just because I focused on sustainability.
Another issue with luxury brands is that they don’t consider the environmental impact of care. Many put dry cleaning on the care instructions (as on this Ralph Lauren jacket, made in the Philippines) which isn’t environmentally friendly. And, in many cases, the items are better cared for by hand washing. I don’t know how many times the dry cleaner couldn’t remove stains and when I try at home, as a last resort, it works perfectly. Money and chemicals wasted.
The luxury conglomerates seem to lack a thorough understanding of sustainability issues. For example, when LVMH reports on biodiversity, they write about how they finance biodiversity research rather than how they take biodiversity into account in their sourcing of raw materials. Now I am all for funding research, of course, but certain issues we already know a lot about, such as pesticides and biodiversity. We can act on these today.
Similarly, it is admirable that Kering has developed the Environmental Profit and Loss account (which I often teach to students) but more important is how they handle their everyday sustainability challenges. I searched for organic on Kering’s website and only found ‘organic growth’.
Taking the opposite road, many cheap brands are not as diligent about working conditions and where things are made* but are instead rapidly increasing their share of ‘better’ or organic cotton and renewable fibre. They hardly ever prescribe dry cleaning. But then again they don’t make clothes that should last.
Thus while some brands are working on social issues and others focus on some of the environmental, few brands cover all the necessary issues. Those who do are generally those that started their business with a sustainability focus. These brands are generally slightly more expensive than fast fashion but usually much cheaper than luxury brands.
So the answer is no: price is not a good indicator of sustainability.
* The Inditex group (Zara, Massimo Dutti etc. ) is an interesting exception. Around 60% of their suppliers are located in proximity to the headquarters in Spain.