New feature on Expedia??
 

Well, I was looking around for some tickets on expedia.com and found an unfamilar feature. On certian departures and returns it pointed out that there was only 1 more ticket left for that price. I'm not really sure how they come up with that but would like to exactly know whether it was through SABRE or somewhere else. Has anyone else run into this???

I believe Expedia links into Worldspan rather than SABRE.

Telling you how many tickets are left at a specific fare is pretty trivial - it's just a case of taking the raw date from Worldspan (e.g., "Q1" = one seat left in booking class Q) and translating it into plain language.