Let me preface by saying that if you're after a bargain and more net protein then the Derrimut offer is a better deal (especially if you can get the AminoZ price beat working): OzBargain
I usually have Gold Standard 100% whey but I ordered from these guys because I wanted to try a different product than usual and I was enticed over the option of having two different flavours. From what I understand, 4kg of this is a total of 100 serves. It is 0.55kg less than the ON counterpart though so just keep that in mind.
Most of the reviews seem to be pretty positive:
Use SMART2014 for a 5% discount. Free shipping on all orders over $150
Here's some information on shipping: https://www.uprotein.com.au/shipping/
I've ordered so will report back on how it tastes. Obviously if anyone else has tried these guys before, definitely let us all know.