Mwave offers the LinksKey 24-Port Gigabit Ethernet Switch, model no. LKS-SG2419, for $89.99 with free shipping. That's $5 under our August mention and the lowest total price we've seen. (It's also a current price low by $17.) This switch can be be used on a rack mount system and features half/full duplex and 802.3x flow control.
Are you throwing away money? Before tossing these items that are considered disposable, consider how to give them new purpose.