I booked SEA-OAK a few weeks back when prices were $49 one way in Y. Booked into G class for $91.20 RT. I found it via the deals page on Alaska website. It will accrue roughly 2,000 EQM for a quick turn and low fare. Similar flights in Nov and Dec to what I booked are priced at $69 OW currently. Not saver (X) fares.