That's a good point: $900 for F on PDX-SAT isn't awful. It's on DL and there are some options for mainline metal the whole way (via SLC).

I'm still not a fan of buying domestic F - it just isn't worth much to me in terms of hard cash - but if it is a "need" then this isn't bad value.

I've flown to SEA when I "needed" to be on a flight (walk-up, in coach) and paid almost $900 R/T before. In that light, this isn't a bad fare. Sometimes I agree that F fares are totally artificial - nobody's buying them except corporate customers who get 20-40% discounts off of list fares. But this one isn't really in that realm....