See video.
http://www.youtube.com/watch?v=0mkqghBVnLI
This is taken in the market overview. I just started up BA and loaded all the markets to Guardian. then opened up the market overview. The price kept changing from 5.0 to 5.4 so I desided to make a video so you could see for yourself.
I can only imagine that the low would show, at a minimum, the low of the data collected in Guardian but I actualy hope it will show the low of the history of it trading ? The manual says low trade price so I assume the last.
another think I just see is the high low price showing prices that I do not think are available...
ps: In the betfair chart I can see that Iriss Flyer traded below 4 and roughly around 9 so I can only assume that should be the price that would be showing ?