You don’t need to have a high budget for Google Ads to work for you. But here are some considerations.
As somebody else pointed out, the CPC has a big impact on what your budget should be. If you’re offering university degrees you can expect to pay $80-100 CPC. A monthly budget of $300-400 will buy you 4-5 clicks. That’s not going to get you very far.
If, however, your average CPC is just $1, buying 300-400 clicks a month isn’t bad at all.
Why is having a larger budget better?
The more you spend the more conversions you get. As campaign optimization is based on conversions, you can fast track performance improvements when you spend more.
Here’s a post I wrote a long time ago about effective small budget campaigns: [https://www.tenthousandfootview.com/5-tips-effective-small-budget-adwords-campaign/](https://www.tenthousandfootview.com/5-tips-effective-small-budget-adwords-campaign/)