When you scale your ads, basically you put more money to push your offers to more people.

Of course, scaling can be done using multiple strategies and tactics that can help you get more results from your ads.

However, in reality, it doesn't mean that you'll get more results at a cheaper rate. In fact, you'll most likely get more results at a slightly higher CPA, profitably.

It is possible for you to think that you're getting more results at a cheaper CPA if you pay more attention on the compounded profits without looking deeper at the actual CPA.

One thing is certain when you scale your ads. Your offers will probably be reaching more cold audiences than your regular ads.

Even when you don't change your audiences, the granularity of the targeting becomes less strict with the availability of more budget.

Additionally, the frequency at which your ads show to users will likely increase except you have implemented a frequency cap.

If you observe these two conditions; REACHING MORE COLD AUDIENCES and INCREASE IN ADS SERVING FREQUENCY PER USER, you'll expect a more expensive CPA even if the end result is profitable.

However, if you scale your ad and you're getting more result at a cheaper CPA, it is probably because your initial budget is not sufficient to deliver your ads efficiently to your target audience.

I am the Google ads specialist, Ojasweb.