Was just looking at some regular routes that I take, and I noticed that the cost of upgrading from Basic Economy to Main Cabin has gone up. Whereas the "upgrade" used to be $25 each way between LAX and SFO--at least two weeks ago--the cost is now $35 each way. I was also going to buy a ticket from JFK to SFO, and a couple weeks ago, the cost to "upgrade" was $25 each way. Now it's $45 each way.

Is anyone else noticing this?