Reverb offers its Reverb Clip-On Guitar Tuner for $3.99 with free shipping. That's the lowest total price we could find for such a tuner by $9, although we saw it for a buck less last winter. It includes a battery. Limit one per person.
DrivenGPS via eBay offers the New Alesis 5-Piece Electronic Drum Set with Module, model no. DM6 USB, for $299.99 with free shipping. That's the lowest total price we could find by $29. It features a USB-MIDI output, 15 programmable drum sets, bass drum pedal, and drumsticks.