Amazon offers Prime members the BalanceFrom High Accuracy Touch Multifunction Digital Kitchen Scale for $16.95 with free shipping. (Non-members can spend $35 to bag free shipping; otherwise, it adds $6.97.) That's $33 off list and the lowest total price we could find. Features includes LED-backlit LCD display, tempered glass coating, and support for up to 11 pounds in .05-ounce increments.
Orders placed via Prime by December 22 are guaranteed for Christmas delivery.