UPS ping. Cheaper as well.
Before long the USPS won't have anything to do but go to union meetings.
Media mail is dirt cheap compared to anything else. I entered a 10 pound package from Ohio to California.
UPS Ground = $11.45.
USPS Parcel Post= $18.14
USPS Media Mail = $4.84
I can understand why they want to upsell to Parcel Post. $13+ for essentially the same service.