I have some Dimezone-S but since this chemical is rather difficult to source in small quantities here in Australia, I'm interested in getting some more so as not to run out of it in a few years. I'm using it instead of phenidone in pyrocat-HD and ID-78 paper developer. I'm planning to make a Microphen-like developer too.
I was lucky enough to get some from Quantum Chemicals in Melbourne when a large client brought in 25kg. My contact there arranged for me to take 1 kg from that consignment, and I paid $148 plus 10% gst.
My contact no longer works there, and the best that they can offer is 25kg at about $4,500(AUS) plus 10% gst. I don't want to get into the chemical retailing business, but I'd be interested in arranging a joint purchase with it being shared by a couple of dozen photographers. At about $200(AUS) per kg it goes a hell of a long way, and is much cheaper than the phenidone offered by Vanbar which is the only supplier I know of.