The Bulk Campaign Builder builds a Sponsored Products bulk sheet you can upload straight back into Amazon Ads. You need to be signed in, and it lives on each ad account's page.
Where the rows come from
Pick a completed audit and the builder seeds itself from it: the products it found, the keyword candidates worth promoting, and the negative keywords worth adding. The header tells you exactly what was seeded and from which audit. Everything is editable before you download.
Bids are derived from your real cost per click when the audit has enough click history, and the screen says how many clicks it used. When there is not enough history, the builder uses The Badger's flat default bids and says so.
What it generates
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Campaigns, ad groups and product ads for Sponsored Products.
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Auto targeting groups: close match, loose match, substitutes and complements.
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Manual keyword targeting in exact, phrase and broad match.
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Negative keywords.
Every row is a Create operation. Bids are kept between $0.02 and $1000, because Amazon rejects anything outside that range at upload time.
Seller Central and Vendor Central
The builder detects your account type from the audit's product ads. Seller Central sheets use the SKU column and need both ASINs and SKUs. Vendor Central sheets use the ASIN column only. You can switch the setting if the detection is wrong.
Downloading and uploading
Use Preview Bulk Sheet to see every row, then Download Excel. Upload the file in Amazon Ads under Bulk operations, review Amazon's own preview of the changes, and submit. Each build is kept in the run history on the same page, where you can download it again later.
Read the sheet before you upload it. The builder gives you a strong starting structure, but budgets, bids and names are yours to decide.