Around 2003, somebody asked me a question regarding paid search: “What is the most expensive keyword is on Google Adwords, and how much does it cost?”
I guessed, increasing the amount I thought it might be acceptable to pay every time somebody clicks on an ad. £20? No? £30? Surely not!
The upshot is that I was horribly wrong, and that some advertisers were paying “about £70 a click” for the term ‘mesothelioma’, which is a type of cancer associated with asbestos. It was immediately apparent that legal firms would spend that kind of money because they were hunting for big ticket compensation lawsuits.
Now, with Google’s revenues having grown to more than $67bn globally and keyword inflation, how has this changed?
To help me find the answer, the good folks at SEMrush provided me with a huge list of the most expensive keywords in five countries.
I’ve looked at the UK, with 2,000 keywords to analyse (from its database of 12m in the UK) and here are the top results…
Betting-related terms account for 77 out of the 100 most expensive keywords, and 22 out of the top 25. How Google must wish that online gambling becomes legal in the US!
The most expensive keyword term cost £148.51, for ‘play live blackjack’. The least expensive in the top 500 cost £54.92.
Three of the top 25 target searchers who can’t spell ‘roulette’. Typos are a regular feature in the top 500 results, and beyond.
The top 500 represent 217,530 searches a month. That’s more than 2.6m searches a year. Remember that the long tail is very long…
Maximum spend opportunity
As well as looking at keyword prices I calculated the maximum possible spend, by multiplying CPC prices with search volume.
There are more than 3.6m annual searches for the word ‘casino’, and with an average cost per click of £70.40 gaming firms could spend more than £27m on that term alone (assuming the impossible – a 100% click rate).
Six sectors pay the big money
As well as gambling, there are four other sectors that appear in the top 100.
Companies in these categories need deep pockets to buy ads on Google. They are as follows:
- Technology [10/100]
- Finance [8/100]
- Legal [3/100]
- B2B [2/100]
In the top 500 most expensive keywords we also see a couple of Health-related terms, though no mention of ‘mesothelioma’ in the UK (it remains one of the most costly keywords in the US).
Let’s look at the top keywords across these sectors…
The SEMrush data comes from a range of publicly available and internal sources which makes it unique, but still very similar to authoritative sources such as Keyword Planner. The prices shown are averages.
Prices paid may differ, as advertisers pay different prices at different times of the data.
Nevertheless, these prices are certainly indicative of the sums advertisers are willing to pay to attract new customers via Google.
What do you think? Any surprises? Do leave a comment below…
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