I have a few things of theirs (dress, shirt, jacket, cushions, scarf) and would say the quality is decent (though I usually go for natural fibres) and probably similarly priced to stuff of similar quality. You can find some items on ebay or vinted for less than new, but still not cheap.
I have to agree that it is a bit of an arty middle aged/older woman uniform, as sold in museum shops and boutiques in places like Hay-on-Wye, but that doesn't bother me as I am that demographic.