You seem to be missing the point throughout this thread bledd.!
My point is that nothing is free, you buy tyres with "free balancing" its alread priced in. If you have the tyres then you'll get charged. In your case where you wouldnt because you use them a lot - its already been charged in your previous bills/next ones!
Its business and you NEVER get anything for nothing.
I appreciate the cost of balancing is already in the bloated tyre prices, I've been in twice and had free balancing done. No other work was done, and no bill was given. First time was because my car had developed a speed wobble at 60mph, the second time because during a CV joint swap, I accidentally knocked off a wheel weight

-This has gone horribly off topic now, I am done with this thread