> I personally only care about the shipping. 

I only care about the shipping as well.

  > I'd gladly ditch all of the other tack-on services for $10 less a month.

I would even ditch the other tack-on services and keep the existing price if I could opt to "stop using OnTrac for anything"!

OnTrac regularly delivers late, not at all, or with the package arriving in a condition that my friends and I have started to refer as "OnTrac condition". Maybe you have to pay extra to not get the "looks like it was kicked down several flights of stairs stairs and smells like it was rubbed down with cigarette butts" treatment?