My current deck of red Bikes has an oddity to it that I don't recall seeing on in a deck before, but specific cards in the deck (in this case, Ace and 9 of Clubs, 2 and 10 of Diamonds, 6 of Hearts and 7 of Spades) have a slight dark smear (appears to be blue in color) down the left side of the face of the card. It's faint, but it's noticeable - especially in a bright, or well-lit room. Again, this was in a 2-pack that came with a red and blue deck, but it appears only the red deck was affected by this, and not the blue.
And like I mentioned in another thread, my Chinese-made, imported Streamline deck has terrible misalignment with the printing on the court cards.
I also wouldn't chalk up off-centered backs as misprints or manufacturing errors - with the exception of my Limited Edition Ace Authentic deck, I haven't come across any other deck that doesn't have off-centered backs (unless you count Bee, but like Don once said, even Bee can be affected by off-centered backs).