Three models for determining the true value of data by Armen R. Kherlopian via @infomgmt

With proper targeted analysis, data scientists can uncover meaningful insights to guide decisions on products, customer experience, risk mitigation, processes and profitability.

This highlights the ways to go with your data now.  I would suggest that you can also add your own data to public datasets as well as paid for data in order to get more value from it. However I will sound the caution here as I always tend to - you need to have good quality data is you want to sell it or derive any decisions or insights from it. So you need careful validation and stewardship of the data.