old factory, or new factory.. the knots should be at least somewhat bleached all around. It is important if you want to show any scalp, or have a lower density. I can understand if they didn't bleach really really good.. but anything less than that should not be accepted IMO.. no matter if it's a $200 piece or a $3,000 piece. If they are not going to be bleaching, then it should be stated when you purchase that you, as a consumer, have to purchase a bleach kit in order to bleach them, and that the bleach kit includes fabric dye remover. I suggest they do not dye the pieces like they have been, so that no fabric dye remover is needed if knot bleaching is going to be needed every time.