AltaTac via eBay offers the
iGo International Travel Wall Plug Adapter, model no. AC05054-0004, for $7.49 with free shipping
. (Action Gear via Amazon
charges the same.) That's tied with our mention from two weeks ago and the lowest total price we could find by $2. This adapter supports 100V to 240V input and plugs for the U.S., UK, Europe, Australia, and China. It features retractable prongs and a replacement fuse compartment containing two fuses.
Update: AltaTac via eBay has increased in price; however, Action Gear via Amazon still offers it for $7.49 with free shipping.