I just shipped a large and heavy pair of speakers (175 lbs each) from Virginia to Connecticut with UShip. It works great as long as you aren’t in a hurry.
BTW, @elliottbnewcombjr I used the UPS Store to do what you describe years ago. I dropped a pair of floor standing speakers (80 lbs each) off for them to package and ship. They literally put them in a single outer box with the only packing material being foam peanuts. They arrived at their destination completely destroyed. The insurance claim was honored, so there's that I guess.