I had a twenty-five percent discount from a restaurant at UnberEats yesterday.
Here are the calculations.
Meal Price: £18.90
Promotion Discount: -£4.73
Service Fee: £1.89
Delivery Fee: £2.79
So, I saved five pence in the end!
I guess I should look at it more optimistically and factor in that it would have cost me £23.63 without the discount.