You mean like how every other update was free?

It will cost $29

Yes, with the difference that the other OS X updates were not just a bunch of iOS Apps ported to the Mac, that why I paid for them and that's why if Mountain Lion is release with a price tag over $0 I'll keep using Lion (and hopefully this will incentivize Apple to make a real OS X update somewhere in 2013-2014).

He meant like every iOS updates were free. It will be free

I hope it'll be $29, because that's near enough to free, and I like the idea that Apple has a financial incentive to continue supporting their existing customers.

Then I will keep using Lion in hope they release a real OS X update sometime in the future for which I would pay play gladly as I've been doing with all the previous updated, because right now Mountain Lion is just a bunch of iOS Apps ported to OS X.

I'm sorry, but IMO the value of this update is $0.

"Real" updates used to cost $130. Now we get a couple updates for $30. In the long run, you're likely paying less for new features than you used to.