The CPC Map is a handy tool which will give advertisers a good overview of the prices they can expect to pay for a particular niche in a particular region. However, the tool still needs more work, and the markets need to be expanded further especially into non-English speaking territories. That said the ones it currently operates in are pretty big and most people will be targeting English speaking regions anyways, so it is still worth exploring.
Another feature of Ahrefs that could potentially help you take your campaign to even better heights is their content gap feature. It gives you the option to check which keywords your competitors are ranking for so you can stay one step ahead at all times. Basically speaking, Ahrefs gives SEOs the ability to overtake their competitors through knowing which keywords to target and focus on.