The Battle for Holiday Season Glory – Google Shopping vs. Amazon Product Ads in Q4


They say “put your money where your mouth is.” Well, word on the street, and perhaps every street in the world, is that Google and Amazon are your money makers when it comes to online retail. Google Shopping and Amazon Product Ads are undoubtedly two of the most dynamic, traffic-heavy paid comparison shopping engines (CSEs) in existence. But everyone knows that. What most probably don’t know are the subterranean levels of the CSE giants: The raw data. The revealing truths.

Which CSE was the top performer in Q4? CPC Strategy compares Google Shopping and Amazon Product Ads based on significant metrics like traffic, overall conversion rate, and average cost per click (CPC). Let’s take a look.



Don’t be alarmed. Amazon’s traffic didn’t just plummet in Q3. Actually, quite the opposite happened. Google Shopping’s traffic was just so high that Amazon’s traffic was relatively that much smaller. Google sent 144% more traffic to online retailers than Amazon did. That’s more than twice the amount of traffic. This is a significant improvement for Google from Q4 2011.

In Q4 2012, Google sent 96% more traffic to merchants than Amazon did. Why the sudden difference? Other CSEs, like Shopzilla and, are catching notice of Google’s huge traffic pool and have begun to advertise products on Shopping. The traffic winner: Google Shopping.

Conversion Rate (CR)


Here we see 2 conflicting trends. Since Q4 2011, Google Shopping’s conversion rate has steadily declined from 3.1% to 2.4% in Q4 2012. That’s a 22.35% decrease in one year. On the other hand, we have Amazon, who’s conversion rate has consistently risen from 1.8% in Q4 2011 to 2.8% in Q4 2012. That’s a 57.5% increase in a year.

Why the difference? Well ever since Google switched to a paid CSE model, it’s become clear that merchant bids have had an enormous impact on how well retailers’ products are exposed, and consequentially, their conversion rates. The conversion rate winner: Amazon Product Ads.

Average Cost per Click (CPC)


Cost per click is a pretty new concept to Google. They only officially switched to the paid model several months ago in October, and so we can see that through Q4 2011 – Q2 2012, Google has no average CPC.

However, when CPC became a mainstay with the new paid Google Shopping in Q3, it started out lower than Amazon and stayed that way throughout Q4, moving from an average CPC of $0.30 to $0.31. Amazon’s average CPC has actually increased somewhat over the past year, starting out at $0.33 in Q4 2011 and increasing to $0.41 in Q4 2012. What we see here is that Google’s average CPC was 32.5% cheaper than Amazon’s in Q4 2012. The CPC winner: Google Shopping.


While the reality is that I haven’t even looked at other significant metrics like cost of sale (COS), revenues, and engine responsiveness, Google Shopping is still the stalwart here. In the full report (to be released on the CPC Strategy Blog next week), Google has cemented itself as the premiere CSE in Q4 despite being the youngest paid engine.

What does this mean for retailers? Your holiday shopping season strategy, which you should be preparing now, should focus in large part on Google Shopping because it’s the serious contender and money maker during the holidays.


  1. 1

    Even if Google Shopping ads look better and catch my attention, I have an Amazon account established and the prices are generally cheaper (9 times out of 10 for what I’ve bought).. 2 clicks and it’s in the mail.

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