BiH Electronics via Amazon offers Prime members the Monster Outlets To Go 200 Global Adapter, model no. MP OTG200 GA, for $8.99 with free shipping. (Non-members can spend $35 or more to qualify for free shipping; otherwise, it starts around $6.15.) That's tied with our mention from three weeks ago as the lowest total price we could find by $10. It features two global AC outlets and a USB port.
Update: It's now sold out; however, Vista Distributing via Amazon offers it for $9.99 with free shipping for Prime members.
The Tool Pit Unlimited via eBay offers the Monster DNA On-Ear Noise Isolating Headphones in Cobalt/Grey for $70 with free shipping. That's the lowest total price we could find for any color by $10, although we saw them for a buck less last month. They feature a foldable design, ControlTalk cable for iPhone, and dual audio ports.
Monster via eBay offers its factory-refurbished Monster HDP 1800 PowerCenter for $75.95 with free shipping. That's tied with our mention from last week and $156 below the best deal we could find for a new unit. It features eight surge-protected outlets, a clean power filter to reduce electronic noise, and T2 circuitry, which disconnects the PowerCenter when unsafe power levels are detected.