What an agency may give you

An agency may hire, train, schedule, and watch the chatters. It may give you backup when one person is sick. It may also cover nights and weekends. This can save you from managing a team on your own.

What can go wrong?

You may not know who is talking to your fans. The voice can change from shift to shift. Some teams may push sales too hard. Reports may also be hard to read. A long contract can make it hard to leave.

Questions to ask first

When an agency may be worth it

An agency may fit a busy page that needs many hours of coverage. It can also fit a creator who does not want to hire and manage staff.

When it may not be worth it

If your inbox is quiet, the fee may be too high. If your brand depends on very personal chats, you may want to keep control or hire one person you can train closely.

Simple answer: An agency is worth it only when the time and profit it adds are bigger than the fee and loss of control.