Earlier quoted context omitted.
I agree with the thrust of your argument, but I'm confused with regards to ebay. I took a casual look and, yes, found listings of "financial data" (among lots of buzzy keywords) for Do you have personal experience buying data from ebay? Why would you do that?
I got it from this seller and at the time it was $99. http://www.ebay.com/usr/artinvest389 I did test random samples from the data against other data providers and I am using it every day an yet to find errors or mistakes...
Sounds like fun for those that like technical analysis.