Let's consider a few skills:
Web Designer: Often better for project-based pricing, as project scope is easier to define in advance.
Copywriter: Either can work. Hourly may be better for ongoing content, projects for one-off pieces.
Virtual Assistant: Hourly is often the norm, as tasks can be unpredictable.
General Pros & Cons
Hourly
Pro: Flexibility, good for ongoing work.
Con: Income variability, potential for scope creep.
Project-Based
Pro: Predictable income per project, rewards efficiency.
Con: Requires accurate scoping, risks undercharging if projects drag on.