The phrase "upmarket women" refers to high-class or affluent women who have refined tastes and preferences. They are often associated with luxury, elegance, and sophistication. Full definition
She is looking for upmarket women's fiction, smart commercial fiction, and literary fiction, and wants to hear from underrepresented and marginalized voices in particular. (museandthemarketplace.com)
I recently answered a survey to a large upmarket women's clothing brand here in Australia, I spend a lot of money on their brand each year. (amidprivilege.com)
I also hear the term upmarket women's fiction, which means it's a little more serious and deals with deeper issues. (lindacassidylewis.com)