Supplier of the day for today is:https://jinbohao.en.alibaba.com/
I got tired of paying AU$30+ for filament about a month ago, so now that I need more I'm going to step it up a few notches.
The shipping costs $17 more than the 20Kg of filament (total 28 kg of freight), but ultimately I pay AU$16 per kg of filament, so it's still cheaper than buying locally or from china in small batches.
today, freight costs were:
20 rolls, US$4.9/kg
260 ROLLS (1 CBM), US$3.8/KG
Keep in mind that for 20 kg of filament, you have 28 kg of freight... that ratio will probably diminish a little as you go for a CUBIC METRE OF FILAMENT!!! (lol)