These patterns are deeply discounted because they have small defects that don't allow them to be sold at regular price. The defects are things like small area of torn tissue, damaged cover, wrong price/size, etc. The specific issue with each pattern is in the item name.
Additionally, there are some patterns listed here that have been recently updated and these are older prints. All pieces of the pattern and instructions are included, so you will not be missing major pattern parts. We update these every month or so.
Defect is included in product description.