'a niche topic' is correct and usable in written English.
You could use it to describe a subject or topic that is specific or specialized. For example, "She specializes in a niche topic - the impact of cryptocurrency on global economy."
Hungry children are no longer a niche topic, but are at the centre of the debate around poverty and the cost of living crisis.
Anorexia is typically treated as a niche topic; Noxon told Vulture that male studio executives thought the subject was "too small".
It may sound like a niche topic, but Søderberg's just one of many books coming out about how to live Danishly for the Christmas season: The Little Book of Hygge, How to Hygge, The Art of Hygge.
If you develop a curiosity about a niche topic, you must start an online newsletter dedicated to it, work to build your audience, and then try to monetize the newsletter.
Ami Ashkenazi, the company's marketing and sales manager, said a best-selling cookbook in Israel sells about 6,000 copies, but for such a niche topic, 2,000 to 3,000 copies sold would be considered a success.
Realistically, going deep on a niche topic like Asia tech is challenging, particularly when you try to consider potential exits.
Today, the company is launching a new feature called Communities that lets users build their own review sites around any niche topic.
It is not unusual in Japan for a manga on a seemingly niche topic to gain enormous readership and become serialised on television or turned into films.
However it may appear sometimes as a narrow and restricted niche topic when compared to other exploration production disciplines.
While Gebauer may have found his niche topic primarily out of luck, he was able to develop a career in it due to his commitment to skepticism and a thoroughly analytical approach.
Blog regularly on your niche topic to build your base audience.
