It's not as easy to get cheap airfare with PL any longer....which is a great disappointment. Whether that is just a result of the airlines giving them less inventory or what....hard to say.

As for the 10% discount ad, I would just disregard it and bid anyway. That preliminary stuff is frequently misleading. You don't REALLY know if you can get it for the price you want until you ignore all those "you have almost a zero chance of being accepted" banners and bid your price.