Direct answer
There is no universal book-marketing budget. Separate professional campaign work from media spend, set a test budget you can sustain, and judge activity against measurable goals such as qualified traffic, mailing-list growth, retailer visits and sales data where available.
Separate fees from ad spend
Strategy, content creation and campaign management are different costs from the budget paid directly to advertising platforms.
Start with the audience
Genre, comparable books, reader interests and the author’s existing audience should shape channel selection before money is committed.
Measure before scaling
Use trackable links, retailer data and advertising reports to identify which activities deserve more budget.
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