Go with the infinite glitch. Print the label and wait your allotted handling time. When eBay notifies you the account has been compromised, ship the label on an empty package (or something worse to ruin the dropshippers feedback wherever they are selling them). I suggest printing some of the shock pictures from the early internet. Perhaps paste a picture of the set in the middle of Goatse's ass?
You're already being unethical, but hiding behind a technicality. Might as well go all in and still get paid, keep your set, and screw the dropshipper as well. As right now only eBay is being screwed, and you're knowingly helping someone else cheat the system.