A5 Wagyu Beef for $30 an ounce! Worth it?

The Top of the World restaurant at the top of the Stratosphere in Las Vegas serves this 3oz Japanese A5 grade Wagyu steak for $90.00.
(That’s $30 an ounce!)
I try it and compare it to a 12oz Australian grass fed Wagyu ribeye at $79.00 (only $6.58 an ounce)
Which one is better?
Is there really a difference?
Let’s see!
Post your opinions and experiences with these steaks!