I pay $16/kg
If i feel like getting it online and picking it up from an Airport it drops to $10/kg (Doing this next as i am getting $300 at once).
So, i guess i pay about $4 a pound from brisbane and $6.50 roughly if i get it from the
LFS.
However, my
LFS gives me something like 5% of everything i spend in 3 months to spend on whatever i like, i've spent like $900 on my tank so far or something so i've gotten $45, doesn't sound like much but hey it is better than nothing...