Stone, I started this thread out of the same frustration, and I still buy the same stuff from the same places I originally posted. I am not going to spend my time researching new places, but you are welcome to, which is the entire point of this thread: to be updated as needed by people across different regions and as availability changes. If you find new suppliers, list them here, but what chemicals are needed for each process hasn't changed. The quantities you can buy them in may have, but not the steps.