You really should start planting your own sources and hopefully when things arent as available as they are today, it won't matter because you will be self sufficient.  And buy up all that root bark while the buying is good. You guys don't know how lucky you are.  It took me 2 days to harvest and process 1200g of longifolia phyllodes, it took 2 weeks of drying them to the point where I was happy to shred them. It took 2 hours jamming them through a paper shredder to break all the material up and another week in a dessicating chamber to remove the last of the moisture. Leaving me with 540g of dry phyllodes. Add to that 3 separate acid cooks over 5 days and 7L of solution to boil down which will take another 2 days. And if my tek is 100% efficient the most I can hope to get is 1g of spice.  Easily a months worth of work, now that is dedication to a cause. What I wouldn't give to be able to order some bark online.  Mortgage your house and buy root bark