Flat Monthly Retainer
How it works
A fixed monthly fee regardless of your ad spend, revenue performance, or catalog changes.
Who it works for
Brands that want cost predictability and have a stable ad spend. The fee does not change when your campaigns scale.
Incentive problem
The partner's fee is the same whether your brand grows 40% or stays flat. There is no financial upside for them in outperforming. Some partners run excellent engagements on flat retainers because their incentive is reputation and renewal. Others use it to underprice scope and then underdeliver.
Typical range
Flat monthly retainer for Amazon-only management typically ranges from $2,000 to $8,000 per month, based on 2026 market pricing benchmarks (AMZDudes, 2026).
