Newegg offers the TRENDnet GREENnet 8-Port Gigabit Ethernet Switch, model no. TEG-S82g, for $24.99. Coupon code "EMCPAWA28" drops it to $18.99. With free shipping, that's $1 less than our mention two weeks ago and the lowest we could find by $9, outside of the mention below. This unmanaged switch uses GREENnet technology to automatically adjust power voltage for energy savings. Deal ends September 25.
A close price: TigerDirect via Rakuten offers it for $19.99 with free shipping.