Okay, you WON'T be able to max games out, buy peripherals, record, stream and play heavy games on these $600 builds.
All I see is people with low budgets trying to record and shit, it won't work.

Does it matter if parts are in usd?Yes, it does.
Prices in America are cheaper but if you purchase from their websites you'll have to pay import tax etc.

What games are you looking to play?

Change the CPU to a 4790K, change the motherboard to a Z97, change the SSD to an 850 EVO, change the graphics card to a R290x, get a bigger wattage PSU, as for the optical drive, I wouldn't get one bu ...

Well, lets see. For £230 ($450 AUD), you'll get something that can play Minecraft, and only Minecraft.

You need to save up more.

Change the HDD to Western Digital Blue 1TB.
They're overall better HDD's.

When recording you will get like 10FPS lower. If you want a smoother experience save up some more.

http://uk.pcpartpicker.com/p/qfrPHx
Will be using it for heavy gaming, recording, editing, graphics and whatever else I need to.

What would you change?