Adwords gives search volumes in average monthly ranges (e.g average 1000 - 10000 per month). I took the maximum value of each range (e.g 10000) and multiplied it by the Adwords suggested bid (e.g $1) to get a metric to compare different exams and their potential revenue.
The SAT exam has the highest search volume of all exam keywords, and probably generates the most revenue, in spite of the low ad cost of SGD$0.86, so a lot of people care about the SAT exam, but they don't care enough to spend a lot of money on it.
ITIL comes in a close second due to it's high bid, in spite of the much lower search volumes.
ITSM has the highest add cost at $20.61, corresponding to the higher competition, so although search volumes are much lower, ITSM courses are obviously very profitable, probably because they are aimed at business rather than consumers.
Obviously if you want high numbers of customers, you should go for the high search volumes, but revenue per customer will be low. If you want high revenue per customer, aim for business users.
|Keyword||Avg. Monthly Searches (exact match only)||Competition||Suggested bid SG$||Volume X Bid|