Unless you are day trading you don't need such a granular data format, so please stop saying you need to spend thousands and thousands of dollars to be able to back test a trading strategy
If your data doesn't need to operate on an intraday scale, you can get perfectly accurate real time or historical data for free just by using a reputable broker like Interactive Brokers. At that point there's no need to buy the data on ebay, so I still don't understand why you ever would.
Actually I have checked IB API and it is very restrictive, e.g. you cannot request let say all daily data for all symbols for 2007 for example or even for one day for that matter...
