Scavenger campaigns deliver Amazon ad sales at 1 to 9 percent ACoS
A little-known Amazon PPC configuration nicknamed the scavenger campaign is producing advertising cost of sale figures that look like misprints: 16 dollars of spend returning 1,530 dollars in sales, an ACoS of about 1 percent, with other campaigns in the same structure landing at 3 and 9 percent.
Scavenger campaigns are not an official ad type. They are a particular setup, used by managers overseeing millions in monthly spend, that forces Amazon's system to hunt the platform around the clock for the cheapest available clicks.
The catch is volume. These campaigns do not drive large sales numbers, but the sales they do produce arrive at a fraction of normal acquisition cost, making them a margin-friendly supplement rather than a growth engine.
Most sellers remain unaware the configuration exists, which is partly why the economics still work: auction inefficiencies get arbitraged away once everyone piles in.
The broader lesson is that campaign structure still matters as much as bid strategy. Sellers treating Amazon's ad console as a set of default options are leaving cheap inventory on the table for those willing to learn its edges.
