Walmart offers the Scotch Weighted Desktop Tape Dispenser
, model no. C38BK, for $2.42
. Opt for free Site-to-Store pickup
to avoid the $4.97 shipping charge. That's the lowest total price we could find by a buck, although most merchants charge closer to $10. It's designed for tape 1/2" and 3/4" wide and up to 1500" long.
Already spending $25 or more at Amazon? Amazon offers it for $2.42 via its add-on program.