Groupon offers the Comet 10-Sheet Microcut Paper Shredder, model no. M10CD, for $99.99 with free shipping. That's the lowest total price we could find by $90. This "whisper-quiet" shredder has a 4.2-gallon basket and also shreds credit cards, paperclips, and CDs. Deal ends February 23 at 1 am ET.