extras
n. countable B1 Intermediate US //ˈɛkstɹəz// UK //ˈɛkstɹəz// ex·tras
n. things that are added to something else to make it better, but are not strictly necessary. You often pay more for these when buying a car or booking a hotel.
n. items or services provided in addition to what is standard or expected, often requiring a supplementary payment.
The hotel room price includes breakfast, but other extras cost more.
When buying the new car, we decided to pay for a few extras like heated seats and a sunroof.
While the base model of the software is functional, the company generates significant revenue by charging for premium extras that enhance data visualization and security.
Usage
Almost always used in the plural form when referring to additional features or costs.