My wife drinks ciders on a regular, so when I saw this, I thought I'd give it a shot. I bought the Pear flavor and we just followed the directions, with the exception of just topping off the primary to 5 gallons or so. I planned on kegging so didn't wanna bother with any leftover in the bucket, and what the hey, it'll make it a bit stronger, right?
I didn't bother checking the gravity, before or after, simply because I didn't really care about it. We left it in the primary for a week, then added that last packet (the flavoring packet, I believe), when we kegged it.
It carbed up nicely, and we were both pretty happy with it. Good flavor, no artificial sweetener taste that we could notice, and it finished fairly sweet, but not too sweet. I'm happy with the purchase and would buy it again.