(EDIT: Looks like holmburgers beat me to the follow-up...Chris...you've got my email...)
Secant quoted me $300/kilo last year. If their demand has fallen off and / or they're looking to clear stock, it's not surprising they've lowered the price.
You should also see if they'll give quantity pricing on smaller packaging units (like 100 gm, which they quoted me @$75 last year) if we got an order of >10 units (1 kilo) together, so that no one has to worry about re-packaging from the larger container. Even if the cost / gram is more, it's a lot less work.
As for the group buy, don't forget DPUG (is there anyone here not reading both, though?), and the alt-photo-process list. In theory, this should work with gum as well, though it sounds like Kees didn't have any luck with his initial testing... Maybe the large-format forum (http://www.largeformatphotography.info/forum/), but then again there might be a lot of overlap between there and here.
Group buy would probably only work for USA, though. I'd guess there are too many headaches trying to ship chemicals cross-border.
Last edited by gmikol; 09-10-2012 at 06:36 PM. Click to view previous post history.