We use Prime for Whole Foods deliveries....primarily for canned/packaged staples and the like, because we've learned that WF staff can't be trusted to know how to pick out the best fruit or vegetables (esp. when calculating estimated ripening times to match up with menu scheduling), the freshest fish, or the choicest pieces of meat. They don't care, they'll just grab 'n go. An experienced cook's eye and nose are needed when shopping for just the very best foodstuffs (which we should all demand when we shop).
I do, though, feel a bit pampered by the speed of the deliveries; the accuracy has usually been noteworthy, as well.