I was working in the "back room" of a Hobie dealer in the summers of 79 and 80 and we saw / built several of the "A-1" boats. Usually, you had a tough time finding the blem. They were expertly repaired at the factory. Good deal for the customer - they got a perfectly good "new" boat at a discounted price.

Pretty good of Hobie Cat to offer the discount on what appeared to be a perfect boat.

Car dealers do the same for cars damaged in transit from the manufacturer. Although they may not tell you about the repairs (or give you a discount) unless prohibited by state consumer protection laws.