GearBest offers the Anet A8 Prusa i3 3D Desktop Printer for $158.86. Coupon code "GBA8US" drops it to $155.99. With $5.36 for shipping, that's the lowest price we could find by $69, outside of the mention below, although we saw it for $11 less last week. It features a single-extrusion print head, aluminum build plate, SD slot, and maximum build volume of 8.6" x 8.6" x 9.4".

A close price: Allwinshop via eBay has it for $162.54 with free shipping.