There are loads of companies that do that. I designed and implemented a system around 2009/2010 which did exactly the same thing for the energy market. Certain

There are loads of companies that do that. I designed and implemented a system around 2009/2010 which did exactly the same thing for the energy market. Certain subsets of the medical market have embedded players offering similar services. To make real money from this you need marketshare; with that you can look for points ripe for arbitrage..