The USPS is the main driver of inflation for me (e-commerce). So the pain is real. We spent over $125,000 with USPS last year. The year before we spent around $75,000. Our business increased about 22% during the same period. So USPS is now costing me more than any one of my parts vendor's are costing me.
Add to that the fact that the USPS is losing about 1 in every 350 packages I ship. Packages just go poof, disappear and are gone, never to be seen again. That's around $7500 a year lost in the mail, counting product, packaging and shipping. Not to mention time lost paying the employee to package the item.
Then there's the lazy workers who just mark packages as "unable to forward." Packages destroyed in equipment. Late deliveries which infuriate my customers. Packages put in the wrong mailbox which only show up after I've bit the bullet and reshipped the customer a second package.
I'm stuck with the USPS though. Most of the items I ship are ounces. Until UPS or Fedex has a service as cheap as First Class Package I'm married to them.