Hi,
Betfair no longer have a data request charge so you don't need to worry about that.
If you use multiple tab pages then I would recommend turning off throttling in Preferences as it is no longer required.
When you link to Excel the refresh rate is the same as whatever you have in Betting Options but can be set in Excel.
From Excel you can change the refresh rate using cell Q2 by entering the number seconds refresh you require.
If want to know price changes as and when they happen then use the new version with Price Streaming and set it to Full Stream.
You can control streaming using triggers in Q2.
See
http://www.gruss-software.co.uk/forum/viewtopic.php?f=9&t=9763Regards,
Mark