The useful idea
Choose the route with the clearest fit and ownership, not simply the most features.
Start with the recurring problem
A module packages a repeatable pattern. It may reduce the amount of work needed to get started, but your systems, permissions and operating rules still matter.
Choose a project for a different shape
When the important requirements differ substantially, a scoped project can be a better fit than stretching a module beyond its purpose.
Ask about the whole cost
Clarify setup, customization, licenses, connected tools, hosting and optional support. A catalogue page is not a fixed quote or a guarantee of compatibility.