When you order food from a restaurant, for home delivery, the restaurant might have to pay around 35% to Uber, for providing the service. That is on top of any delivery charge you pay.
Order direct if you can, and help to keep these restaurants in business. They are having it tough at the moment, with low sales etc.
There is a ‘Boycott Uber Eats’ petition, that people can sign if they like, at: www.change.org/p/uber-eats-join-me-in-boycotting-uber