I already own a pair of these great headphones. They're extremely comfortable and sound amazing.
There are many reviews that speak highly of these headphones, especially for their price:
https://www.youtube.com/watch?v=aipXii-qWiQ
https://www.reddit.com/r/headphones/comments/3n5eq9/are_you_…
Be aware that these are open-backed headphones. Sound will leak out and loud music or gaming sound will be heard by others nearby.
I also bought a pair for my dad and he was extremely satisfied, so this might also be a great gift for father's day!
FYI, Last time they were mentioned on OzB: https://www.ozbargain.com.au/node/401551 (~AU $131.46).
These may already qualify for the minimum $49 spend to get free shipping. Apologies if the post title is misleading/confusing. I'm unaware of how this works (when you're not a prime member).