Authorized Rokinon dealer bestpriceoptics via eBay has the Rokinon 8mm f/3.5 Fisheye for Canon for $189.99.
This is the absolute lowest price we’ve ever seen for this great value lens. Most mounts are available. Note this isn’t the “HD” version so you won’t get a circular view with a full-frame camera as it is partially obstructed by the non-removable lens hood.
You can see some fun and creative photos taken with the 8mm f/3.5 fisheye in the Flickr group for this lens.