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Amazon US30 days4 min read
ACOS 44% → 19% Without Cutting Sales
How an agency eliminated $2,100/mo of PPC waste across 6 brand accounts in 30 days
ACOS Average
44%→19%
Monthly PPC Waste
$2,100+→$0 waste
Revenue Change
baseline→–2% (maintained)
The Challenge
Scale Commerce was managing 6 Amazon brand accounts. Average ACOS across the portfolio sat at 44% — more than double the category benchmark of ~20%. The agency had tried manual bid adjustments and pausing obvious losers, but without visibility into which specific search terms and placements were draining budget, they couldn't close the gap without hurting sales volume.
What They Did
1
PPC Analytics
Ran the PPC Waste Detection scan across all 6 accounts. Identified $2,100/mo in confirmed waste: duplicate keyword bids, cannibalizing campaigns, and high-spend/zero-conversion search terms that had been running for months.
2
Bid Manager
Applied automated bid rules based on placement-level ACoS targets. Set target bids for Sponsored Products at 22% ACoS (slightly above goal to preserve ranking), with weekly auto-adjustment rules.
3
PPC Analytics
Ran 4-week performance review. ACOS dropped from 44% to 19% as waste was eliminated. Organic rank improved on 14 ASINs as ad relevance scores rose — a secondary benefit not anticipated upfront.
The Results
✓Portfolio ACOS dropped from 44% to 19% in 30 days.
✓$2,100/month in confirmed PPC waste eliminated.
✓Total sales maintained within –2% of pre-optimization baseline.
✓Organic rank improved on 14 ASINs as ad quality scores improved.
✓Agency now uses niche.ltd for monthly PPC audits across all client accounts.
We'd been leaving $2K+ a month on the table and didn't even know it. The waste detection report was embarrassingly precise — I could show clients exactly what was draining their budget and exactly what we fixed.
— Scale Commerce Agency
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