The four options, plainly
Each has a real cost. Compare it against the bottleneck you actually have.
- In-house with a tool: cheapest in cash, fails when that person is already full
- One-off audit, executed internally: direction without a retainer, worth what your team can carry out
- Contractor on a defined project: hands for a fixed scope, no cover when unavailable
- Do nothing yet: right when the site cannot be crawled or nothing gets approved
- Agency: right when capacity is the constraint and scope includes execution