MIKE BEGG
Amazon · Apparel · Sep 1-15 vs Oct 1-15

How an apparel brand grew Amazon sales from $22.6K to $51.6K while ACOS fell to 24.67%

Answer-first

An apparel brand on Amazon grew total sales from $22,606.81 (September 1-15) to $51,616.24 (October 1-15), up 128%. ACOS improved from 30.47% to 24.67% and TACOS from 8.75% to 5.13%. The October window includes Prime Big Deal Days (October 6-7), so part of the lift is the event, not only the ads.

Total sales
+128%
ACOS
30.47% → 24.67%
TACOS
8.75% → 5.13%
Published ·Updated
Total sales · half-month
$22.6K to $51.6K
ACOS
30.47% to 24.67%
TACOS
8.75% to 5.13%
Added sales
+$29.0K

01The challenge

An apparel brand wanted more volume without letting advertising cost run away with it. The comparison point was the first half of September: $22,606.81 in total sales, ACOS at 30.47% and TACOS at 8.75%.

The job was to grow orders and tighten efficiency at the same time, which is where most accounts pick one and lose the other.

Read this one honestly: the October window had Prime Big Deal Days in it and September did not.

02The approach: The Targeting Tighten-and-Scale

The Targeting Tighten-and-Scale raises bids and budgets for traffic while tightening targeting so the extra spend lands on better-performing keywords. Volume goes up and wasted spend goes down in the same pass.

  1. Raise bids and budgets

    Optimized bids and budgets to increase ad traffic and drive more orders, so the account could capture the demand in the window.

  2. Tighten targeting

    Improved targeting to focus on better-performing keywords and reduce wasted ad spend, so the added budget was not spread across weak terms.

  3. Monitor and adjust

    Monitored campaign performance and adjusted campaigns to improve ACOS and TACOS while total sales grew.

03The results

Comparing September 1-15 to October 1-15, total sales rose from $22,606.81 to $51,616.24, an increase of 128% or about $29,009. ACOS fell from 30.47% to 24.67% and TACOS from 8.75% to 5.13%.

Why it worked, and what it does not prove: the October window includes Prime Big Deal Days (October 6-7) and September does not, so the sales jump is not all ads. The part the ads can own is efficiency: more volume at a lower ACOS and TACOS, because the targeting was tightened before the budget scaled.


04FAQ

Was the 128% sales lift all from advertising?

No. The October 1-15 window includes Prime Big Deal Days (October 6-7), and the September 1-15 window does not. The ad-side result is the efficiency: ACOS fell from 30.47% to 24.67% and TACOS from 8.75% to 5.13%.

What is the Targeting Tighten-and-Scale?

Raise bids and budgets to capture more traffic, while tightening targeting toward better-performing keywords so the extra spend is not wasted.

How do you scale ad spend without TACOS rising?

Tighten targeting first or alongside the increase. Here total sales grew 128% and TACOS still fell from 8.75% to 5.13%.

How should I compare periods that include a Prime event?

Compare against the same event window a year earlier, or label the event explicitly, as this case study does. A month-over-month comparison across an event overstates what ads did.

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Mike Begg, e-commerce operator and business acquirer

Mike Begg

E-commerce operator and business acquirer. Founder of AMZ Commerce Advisers (100+ active Amazon brands, 500+ managed since 2016) and GoAvance. Owner of Reach Social Commerce (50+ TikTok Shop launches). Amazon Ads Advanced Partner. Based in Guadalajara, Mexico.

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