Mikrotik's CRS326-24G-2S+RM is a rack-mountable, 24 port Gigabit Ethernet switch with two SFP+ ports, wire speed connectivity and several switching features and can be powered by SwOS or RouterOS. It has an additional CPU unit (With limited processing power) that allows customers to run the full RouterOS operating system on this device.
It gives you all the basic functionality of a managed switch, plus more, such as the ability to manage port-to-port forwarding, apply MAC filters, configure VLANs, mirror traffic, apply bandwidth limitations and even adjust some MAC and IP header fields. The SFP cages support both 1.25 Gb SFP and 10 Gb SFP+ modules.
Cost: price on request due to exchange rate fluctuations