Pros and cons of procedural programming

Imagine that your coworker has come to you with some questions about the project they are working on to apply discounts to the items in the online store and display the final prices to the user. They have mostly been working with procedural programming so far, but they recently learned that there are some other programming paradigms out there that might be more appropriate for their current project. They would like your advice about the pros and cons of procedural programming.