3) JayBee, I did a google search for 'racing System Builder' I had lots of hits just not what I think you were referring to. Would you be able to provide the link? would be really helpful thank-you! When you mention about data you have scrapped, did you scrape the NON-SP prices? and was that eg every minute of the dat or at set times eg 30 secs before offical off time etc? Would be able to throw some money your way for the bookie prices. We have all the other data.. or I could offer you some of our data in return (I'll have to speak with the guy I'm working with)
I should think that RSB no longer exists or has passed into new ownership since I bought the data in the mid-nighties.
Now, that I understand your requirement more clearly. I would say that my data scraping is different. You appear to want to build a timeseries of bookmaker prices, which I do not have.
I don't think historical bookmaker prices would be available in time-series form. You could build your own by taking the XML feed from those bookmakers who provide it and build your own but that would be starting from now and no earlier.
For what reason would you want historical bookmaker timeseries'. I have done a lot of work on market efficiency and might provide you with a short-cut along the lines of "barking up the wrong tree" or "that might work".
If you are looking at pure arbitrage then I would refer you to the first answer. For stat arbs or something else then maybe the second.