yes
No, Beats by Dr. Dre Mixr are not available in Australia.
mixr better sound
Beats by Dr. Dre Mixr headphones have already been released in select countries, below is a link to them.
Yes they do!
No, Beats Solo and Beats Mixr don't.
Beats Solo, Beats Solo HD, Beats Tour, iBeats, urBeats, HeartBeats, PowerBeats, Beats Mixr, and Beats Pro
Beats mixrs are the best headphones for kids and adults! Beats mixrs are even better than the beats pro!
Yes
The price of Beats Mixr headphones in the United States from the Offical Beats by Dr. Dre website are $249.95. Taxes vary depending on where you live. Note: Prices may vary in different countries. Not all models available in all countries.
David Guetta's Beats by Dr. Dre headphones are called Beats by Dr. Dre Mixr headphones. I have provided a link to them below this answer.
There are studio beats mixr beats solo betas tour beats power beats diddy beats and heart beats
Looks like on the ear to me, hence the lower price than the studios