Could someone tell me how to use gruss script for refresh on google chrome ?

http://www.gruss-software.co.uk/Betfair_Refresh_Google_Chrome.htm

Looks simple enough to do, sites down so cant check it at the moment but looks like you just need to drag the link showing on the page to your bookmarks at the top of the chrome browser. It's possible your bookmarks bar may not be showing so go to the little spanner icon in the top right hand corner of chrome, select Tools then selct Always show bookmarks bar then you can drag the refresh link to it

You'd certainly be close to getting charged at that rate. You get charged for over 20 a second , the site usually does two calls on each refresh so 10 times a second would be that 20, and remember the data charges for the website are twice those thru the API. I wouldn't risk it and to be fair I doubt the prices are even updated 10 times a second so you'd probably be wasting your time at that speed.

refreshing the prices isnt really data transactions, is it?

Betfair's riddled with hidden charges ranging from logging in too much

transaction charges for placing or amending bets - charged for going over 1000 an hour

and

Data request charges for refreshing prices etc - charged for going over 20 per second

to the inactive accounts fees of £5 per month for logging in too little :)

ICANT BELIEVE THAT I CHECKED AN ITS TRUE
to the inactive accounts fees of £5 per month for logging in too little :) !!!!!