D’Andrea DCT1 Chromatic Clip-On Guitar Tuner (Silver) for $4.99 shipped. Here is a screenshot for your reference. This A-440 chromatic tuner is compatible with most acoustic and electric guitars and automatically detects the string being tuned.
Tuner
Korg TM-40 Large Display Digital Tuner and Metronome for $21.99 Shipped
Korg TM-40 Large Display Digital Tuner and Metronome for $21.99 shipped. Here is a screenshot for your reference. It features detection range of C1 (32.70Hz) to C8 (4186.01Hz) for a sine wave with reference tone of C4 (261.63Hz) C5 (523.25Hz), along with tuning modes that have both meter mode and sound out mode. Most places have the Korg TM-40 Digital Tuner and Metronome for about $32 or more.
PCI-Express HDTV Tuner for $29.99
Geeks.com has AVerMedia M780 TV Tuner avaiable for just $29.99 + shipping. Amazon and most other places sell the exact same item for about $90, making this a grea deal.