As one of its daily deals, B&H Photo video offers the Rokinon 8mm f/3.5 Aspherical Fisheye Lens
, model no. FE8M, for Canon EF, Nikon F, Sony Alpha, or Pentax K for $179
with free shipping
. That's the lowest total price we could find by $60. It features a 10 elements in seven groups, non-removable petal-type lens hood, and minimum focus distance of 12". Deal ends today.
Note that this lens produces a vignetted image on full-frame sensors or 35mm film.