Voodublue via eBay offers the Monster Cable Diesel VEKTR In-Ear Headphones, model no. 129556, for $49.99 with free shipping. That's tied with our mention from two weeks ago and the lowest total price we could find by $25. They feature a ControlTalk universal cable with microphone and volume controls and multiple ear buds.
Monster Products via eBay offers the Monster Inspiration Passive Over-Ear Headphones in Black, model no. 128917-50, for $99.95 with free shipping. That's tied with our November mention as the lowest total price we've seen for these headphones. (It's also $100 under the lowest price we could find for a new pair now.) These passive noise-isolating headphones feature both Apple and universal ControlTalk cables, interchangeable headbands (two included), and protective travel case. A 90-day Monster warranty applies.