Brother HL Series HL-2240D Duplex Monochrome Laser Printer for $69.99.  Shipping is $1.99 for a total of $71.98 shipped.  Here is a screenshot for your reference.  It prints up to 24ppm at up to 2400 x 600 resolution and features duplex printing and an adjustable 250-sheet paper tray.  Most places have this printer for about $119.