I seriously doubt that you will find a supplier that would be willing to sell small amounts. As I said this developing agent is no longer used except in FG-7 and Edwal is not able to find a supplier at a reasonable cost to them. I did find one company that sells 25 kg drums.
Chlorohydroquinone's redox potential is close to that of Metol rather than its parent hydroquinone. When used alone it was a nice developing agent producing brown tones when used as a paper developer. But again not that special to keep it in use as developing agent. You might be interested in Agfa Studional (Rodinal Special) which like Champlin #16 uses triethanolamine to produce fine grain.
The people who use Amidol are presented with the same problem and have to invest together and buy 25 kg at a time from a Chinese company. The price per pound is not that reasonable.