Amazon offers the 3M Scotch Heavy-Duty Packaging Tape with Dispenser 6-Pack for $11.23. Check out via Subscribe & Save to cut it to $9.55 and bag free shipping. That's $7 under what you'd pay in-store locally, although we saw it for a buck less last June. Each roll contains 800" of 1.88"-width tape.

Note: Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.