Great set of cans for $110 pickup at Umart.
If you want to have these delivered, I suggest checking out this deal here.
Otherwise shipping cost is usually around ~$15.
Comes in Matte Black as well, (if you don't like the silver insignia).
https://www.umart.com.au/Audio-Technica-ATH-M40X-Limited-Edi…
Here's a video of someone reviewing the M40x and to an extent comparing it to the M50x.
https://www.youtube.com/watch?v=9ceoarQf9Ac
A lot of people usually prefer the M40x to the M50x as they both have very different sound signatures and aren't necessarily a direct upgrade.
The M50x headphones are usually considered more bass-y than the M40x - which has a more flat sound signature. There are lots of benefits to having a flatter sound signature, one of them is you don't get fatigued listening for long periods of times unlike the M50x's with its added bass. This is why some users report finding their M50x's sound 'muddy'.
That's not to say the M50x's aren't great headphones, some people really like that elevated bass, but for the people who like a clean and neutral sound, pick these up!
Beyerdynamic DT770 Pro Closed 32/80/250 Ohm $199
Another great pick up for $199
32 Ohm version -
https://www.umart.com.au/Beyerdynamic-DT770-Pro-Closed-Refer…
80 Ohm version -
https://www.umart.com.au/Beyerdynamic-DT770-Pro-Closed-Refer…
250 Ohm version -
https://www.umart.com.au/Beyerdynamic-DT770-Pro-Closed-Refer…
Trying to summarize a Beyerdynamic headphone is a bit of a headache, between the different Ohm versions, amplifiers, etc, there can be a lot to summarize, so here's a video of someone doing a better job than me -
https://www.youtube.com/watch?v=lhwQTjBtj2w&feature=youtu.be
The DT770's have been praised for having an amazing soundstage, in fact, some people claim it has the best soundstage they've heard from a closed back headphone.
As always, they're incredible comfortable headphones, and their bass pops quite nicely.
I've read from a user saying it has a sound signature similar to the M50x's, but better in every way - which I can believe considering how much praise the soundstage of these headphones get, which can definitely translate to a cleaner sound.
I own these, they're a good option if you're looking for something portable and closed back at this price point, but in terms of sound they're just ok, nothing special.