Amazon PPC · Amazon US · 60 Days

Amazon PPC case study: ad budgets matched to inventory, stockouts 5 to 1

Ad budgets were tied to inventory cover and replenishment dates. Total sales rose 10.7%, ad spend fell from $31,000 to $26,000, and stockouts dropped from 5 to 1.

+10.7%

Total sales with 16.1% less ad spend5 to 1 stockout incidents

Headline result

Total sales

+10.7%

Before

$126,000

After

$139,500

Client: Lab Charge
Category: Home improvement
Marketplace: Amazon US
Timeframe: 60 Days
Services delivered: Amazon PPC, Inventory Coordination

Before and after

Lab Charge results, before and after

Measured at the start of the engagement and again after 60 days. Bars are drawn to scale from the reported figures.

Total sales
+10.7%
Before
$126,000
After
$139,500
Ad spendlower is better
-16.1%
Before
$31,000
After
$26,000
Stockout incidentslower is better
-80%
Before
5
After
1
Inventory coverage (days)
+78%
Before
18
After
32
ACoSlower is better
-25%
Before
34.80%
After
26.10%
TACoSlower is better
-24%
Before
24.60%
After
18.64%

The challenge

Spending on products about to run out

The client

A home improvement brand on Amazon US with inventory shortages across several popular products.

Three high-performing ASINs had fewer than 20 days of inventory, but campaigns kept driving traffic to them. Monthly ad spend was $31,000, budgets were not aligned with stock levels, and the business faced stockouts and lost sales.

What was holding the account back

Three top ASINs under 20 days of inventory
$31,000 monthly ad spend
Budgets not aligned with stock
Risk of stockouts and lost sales

What we did

How we matched ads to inventory

The work in the order it was done, with what each step changed.

1
Inventory coverage review
- Days of cover checked per ASIN
- Replenishment dates mapped
OutcomeThree ASINs under 20 days of cover
2
Budget reallocation
- Spend reduced on low-stock products
- Budget moved to well-stocked products
OutcomeStockout incidents 5 to 1, inventory coverage 18 to 32 days