There is someone selling 125ml bottles on ebay.
Wonderful developer, beautifully rich tonality and super edge sharpness. Lots of grain, but I see there are formulas that add stuff to smudge the grain a bit. I always used it straight. On 4x5 sheet film it had a lot of the characteristics of ABC Pyro except there was no tanning and hence no corresponding contrast bump. It is probably the closest you can get to the look from the old thick emulsion sheet films, using modern thin emulsions. Don't forget the eyedropper and a 20ml precision graduated cylinder.