It's not fun to play the fare game as it never gets fair.
Use Expedia's fare listing for example, and you will notice many fares are not available for purchase no matter how you adjust the dates (eg, even with 2 months from now with 1 week stay meeting saturday night requirement). The fare is published, seats are wide open yet the price is unobtainable... why is that?
Roots Air is finally getting ready starting next week. Toronto Star Saturday magazine did a full artcle (>5 pages) on them few days ago. Let's hope it can survive and offer an alternative to travellers.