Scarlet Rubies were selling for 20g each recently, but the market seems to be holding in the 30g range.

Cannot really complain too much; 5k per day would have been nice, but even half of that for under an hour per day... and that doesn't prevent the dailies from being run too...

I'm looking at the remainder of WotLK as time to get ready for Cataclysm.
Save as much gold as possible, and spend as little as possible.
Get the remaining five alchemists to 450 skill with transmute spec (they're DK's and have been made, and set up in ISBoxer, but are still in the DK phased area)...
Then level teams beyond 68th, so they can do alchemy immediately, with the release of Cataclysm...
Hopefully 73rd is high enough, that's the next step after the DK's reach 68th, but getting them to 80th would be better, plus the questing will pay back the cold flying that way.