A book marketing agency can be useful when you need strategy, campaign execution and reporting that you do not want to manage alone. Before hiring, ask exactly which channels are included, who owns the advertising and audience accounts, how results are measured and which costs sit outside the management fee.
Separate management from media spend
Advertising budget should normally be shown separately from strategy, creative and campaign-management fees so the true spend is clear.
Keep access to your accounts
Authors should understand who owns or controls advertising, mailing-list, website and analytics accounts after the engagement ends.
Avoid guaranteed outcomes
Marketing can improve reach and testing, but no responsible agency can guarantee bestseller status, retailer ranking, reviews, press coverage or a fixed number of sales.