Fully refundable F fares on this route selling for $141+ tax or $151 all-in each way. Only a $15 premium fully refundable Coach (not Y fare basis) fares that I usually purchase on this route. Previously F was close to $1000 each way. Not that it'll move the bulk of my business back to US but this seems to be a good business decision. I only buy the cheaper restricted tickets on this route about half the time because I prefer the flexibility of the cheaper WN-matching Y fares. Now I will always buy the refundable F fare (I'm a UA 2P so no free upgrades). Revenue positive for US I guess.

Now if only they could do something about the PHL-BOS shocker fares.