Yes, the US Postal Service updated their shipping API again. This time they changed the name of First-Class domestic mail. I don't think I ever got an update from them. Of course. The only reason I discovered it was because I was updating the shipping system. Anyway, First-Class mail is back after taking a vacation for a few days (since Friday). And you should find some slightly lower shipping prices on items like dice and Disposable Heroes plastics bases.