Not for me it isn't. In fact, one of the things I like about Amazon Prime is that--at least in my case--it means that UPS delivers a higher percentage of my packages. The issue is that, while UPS drops off the package at my door (as they have to), USPS tends to leave it hanging off my mailbox out by the road because they don't want to spend the time coming down my driveway. And I've had more than one such package stolen.