Getting real time market data is not cheap and with good reason, there are many companies/firms that rely on that data to make money so the exchanges and other

Getting real time market data is not cheap and with good reason, there are many companies/firms that rely on that data to make money so the exchanges and other 3rd party companies that have access data can sell for high prices. If you want delayed prices there are a bunch of places to get that (Google and Yahoo are two major ones) but other than that I would not trust real time data that is from a free/cheap provider.