Ask whether the fee is separate from ad spend and includes GST, who owns the account and data, which conversions will be tracked and how, what work happens each month, what results are realistic in the first 90 days, and what it takes to leave. Specific answers are the sign of an agency worth hiring.
Ask who will manage your account day to day and how many other accounts they handle. The person who pitches is not always the person who does the work.
Ask for a sample report. It should lead with calls, forms and cost per lead. Scalepoint sends a plain-English weekly numbers email built around exactly that.
This is one part of a bigger picture. How to choose a Google Ads agency in Australia covers fees, ad spend, account ownership, proposals and timelines in one place.