Lexmark offers the Lexmark T650n Monochrome Laser Printer on their site for $749. Online, the price ranges from $625 (a current sale) to $813. It looks like it can be found for about $700 fairly reliably, but you will want to check shipping and tax on your different choices before you make your final decision as to where to purchase it.
It is network compatible, with Ethernet 10/100 Base TX, a front USB port, and a hi-speed certified USB port. It also has an internal card slot. Optional network ports include three external and internal MarkNet Gigabit options, a Lexmark 802.11 g wireless print server, and an internal MarkNet 802.11 b/g/n wireless choice.
It has an astonishing range of compatibility options. Mac OSX, OS 9.x, MS Windows Server 2000 and MS Windows Server 2003 with Citrix MetaFrame, and a multiplicity of MS Windows OS; ranging from Windows 2000 to Windows Server 2003, including 2003 x64 and moving through XP, Vista x64, up to Windows Server 2008 x64, with all Windows Server choices also running Terminal Services.
Linux Operating systems have not been left out. Among others, it supports Red Hat 3.0 and up, SuSE Enterprise Server 8.0 – 10.0, SuSE Enterprise Desktop 10, Open SuSE10.2 – 11.0. Red Flag, Debian, Ubuntu, a number of Novell choices, Unix and virtually any platform supporting TCP/IP.
The T650n also supports Network protocols TCP/IP and Apple Talk, Network Management protocols from HTTP, HTTPS (including software developed for the Open SSL project), DHCP, DNS, Bonjour, Telnet and many more. It also covers standard printer languages.
As has become routine, you must supply your own USB cord. I think companies are stinting users who purchase a $700- $800 dollar printer by not including a $10 USB cable - and certaining running the risk of upsetting those who've just unpackaged a brand new printer and cannot connect it. Luckily, you have a good chance of being able to canabalize the USB cable from the printer you are replacing.