Kel, good news! As I was searching for some alternatives, I happened across the blog of UJ's creator. He's (fuzzily) planning for a beta of the new verison in mid-September. I hope it's not too hard to get into the beta, whee!
In the meantime, I found Kathroman who is making an AH watcher. To enter the beta, you have to retweet the blurb for it. I did so and now see behind the veil. It's a complex, configurable alert system to email you if certain conditions are met, such as a Spineclaw Crab on Mal'Ganis Horde being listed for under 5 gold. (Like you'd be able to log in fast enough for that! =)
I still have so many pets I'm looking for and keeping an eye out for helping my hubby's collection along as well that I can't bring myself to add in all the things I'd be potentially interested in. But for those with fewer pets left to get or more patience for setting up the alerts, it might be something handy to consider. It will be a paid service eventually, but free while it's in beta.
p.s. I had helpful links to these things but I've been an underachiever in posting, so I'm not allowed to share.
However, they're easily found by going to the Twitter profiles of Erorus for UJ and wowgps for Kathroman. Those share info and linkage.