How much does machine learning cost?

The explosion of available data and computing power opens up many possibilities for business. Smart entepreneurs understood the possibility to rely on data-driven decisions in their activities, but it's difficult to find substance under buzzwords like "big data", "machine learning", "deep learning" and "data science". How can this stuff actually turn useful and how much does it cost? If you miss a clear idea on what machine learning is and why is useful, read here. The following picture expresses the main concepts: some amount of data is going to be fed to a learning algorithm, which in turn will train a model.