What is the cheapest automatic duplex printer that I could buy?

Where can I find a great deal online for HP Deskjet 5850 - Printer - color - duplex - ink-jet - Legal, A4 - 1200 dpi x 1200 dpi - up to 21 ppm (mono) / up to 15 ppm (color) - capacity: 150 sheets - USB, 802.11b, Ethernet

Where can I find a great deal online for Canon MF6590 Duplex Copier, Printer and Color Scanner with Super G3 Fax

Where can I find a great deal online for Brother HL-5250DN Refurbished Network Ready Laser Printer with Duplex

Where can I find a great deal online for Brother HL-4070cdw Color Laser Printer with Built-In Duplex Printing and Wireless Interface

Where can I find a great deal online for Xerox Phaser 8860DN - Printer - color - duplex - solid ink - Legal, A4 - up to 30 ppm (mono) / up to 30 ppm (color) - capacity: 625 sheets - USB, 10/100Base-TX

Where can I find a great deal online for OKI C6150dn - Printer - color - duplex - LED - Legal, A4 - 1200 dpi x 600 dpi - up to 32 ppm (mono) / up to 26 ppm (color) - capacity: 400 sheets - Parallel, USB, 10/100Base-TX

I have tried lots of online suppliers but they have no stock.

I'm looking for a new 4 in 1 monochrome laser printer (Print, scan, copy, fax) with automatic duplex and macintosh support. Wifi would be nice too if possible. What printer that could do all these things would you reccomend for a $250 maximum price tag...

Can you help me pick out a new multifunction printer/fax/scanner? My (small business) office printer died. It's okay, I hated it anyways. But I need to buy a new one pretty much immediately. Every printer gets mediocre reviews online (and rightfully...