In article 3FFcf.7336$941.840@trndny02,
Brian Nystrom wrote:

It's illegal to sell "used" kayak plans. When you purchase plans, you
purchase the right to build one boat with them. Designers have a right
to expect to be paid for their expertise. They have to make a living, too.

Do you have a citation for this law? I'd have imagined that
like any other copyrighted material that you could resell it to
your heart's content.

Mike Beede