TRENDnet GREENnet 5-Port Gigabit Switch for $10 + free shipping
Newegg offers the TRENDnet GREENnet Unmanaged 5-Port Gigabit Switch, model no. TEG-S5G, for $10 with free shipping. That's $5 under our May mention (which required a rebate) and the lowest total price we've seen. (It's a current low by $8.) This "green" switch purports to reduce power consumption by up to 70%.