Buy.com has the Gear One G900DX Circumaural Headphones for $20 with free shipping. Normally goes for $100+. Features 40mm neodynium driver, closed cavity structure, telescopic arms, 180° rotatable frame, and single-sided cable duct.
I saw mixed reviews, mostly complaining they weren't very sturdy and one person suggesting $25 Senn HD-201 are better, though if some paid $100 instead of $20 I can see the reviews being a bit more critical at the higher price point.
These apparently have an MSRP of $200, and a normal price of around $100 or so.
They're not worth buying for that price, but reviews seem to indicate that they are worth it for $20.
I saw mixed reviews, mostly complaining they weren't very sturdy and one person suggesting $25 Senn HD-201 are better, though if some paid $100 instead of $20 I can see the reviews being a bit more critical at the higher price point.
http://www.musiciansfriend.com/pro-audio/gear-one-g900dx-headphones#review
If the sale ends you can also pick them up for same price on eBay (copy 'n paste the link if it doesn't work)
http://www.ebay.com/itm/Gear-One-G900DX-Headphones-Black-/200844013425