Update: Deal over.

6-Pack Duck HD Clear Heavy Duty Packaging Tape – Link

Amazon has this marked down to $9.79.

Checkout with Subscribe & Save for a total of $8.39 w/ free shipping.

• Heavy duty for a strong and secure hold to keep your valuables safe while moving, shipping or in storage
• Offers wide temperature range performance for shipping and storage in hot or cold temperatures
• Adhesive bond strengthens over time for a long-lasting hold on boxes, perfect for storage
• Crystal clear to the core for a professional look on boxes or taping address labels
• Meets postal regulations for shipping tape