250 ml Caffenol-C-M coast me 0.30 EUR. Rodinal and Parodinal 1:50 is about 0.10 EUR. Peanuts anyway. Most developers are quite cheap. Expensive f.e. is Emofin, about 1.50 EUR for 1 development.
Yes, P and M are cross sensitizing, but allergies are rare and toxicity is low. Q is really bad, allergies are frequent, it's probably carcinogenic. Buying Q here is very restricted, no selling to private persons as raw chemical, P and M you can buy without limitations.
Sorry if that is not of interest for the OP.
Last edited by grommi; 01-21-2013 at 10:57 AM. Click to view previous post history.