Brent, I'm with you. I have had packages from well meaning sellers that had enough tape to have kept the Titanic afloat !!!!
My goal when shipping is to use as little tape as possible, and in most cases NO tape at all: Card between to pieces of cardboard, wrapped in sheet of paper (either correspondence or packing slip), then right into bubble mailer.
If you're afraid that a card might slip out of a card saver, then use a post-note folded around top opening.
Duct tape for Ducts ???????? Never heard of such a thing