Have been looking for a Mini ITX case to go with all the amazing deals of RAM, SSDs and GPUs being posted.
I haven't seen the price as low as this (and in stock). I'm assuming they have a warehouse in AUS as shipping is free.
This case includes a PSU and liquid cooling.
Black variant - No stock (on order)
White variant - No stock (on order)
From the published specs both the 3080 and 3070 should fit (3090 definitely won't fit). 3070 power supply wise you should be ok. 3080 I think it really is on the edge, should work but not much headroom.