I've been watching fares for YUL-PDX for the last while. The past few days they've been around $145++ each way for late September / early October (not available every day, but decent availability nevertheless).

Today, as part of the ongoing promotions, a 15% discount code is made available, and what happens to the fare? $335++ each way!

Wow. Now that's an honest business model....



Edit: this morning, the $145++ fare was still around, but this evening it's gone.

Edit 2: 1500th post!