Hi Ben,
I've just bought a Samyang 12mm f2.8 online from E-infinity and the process was seamless and the product as expected. They seem like a highly professional outfit and have excellent feedback.
They are advertising the Samyang 14mm f2.8 for Canon @ $377.00 with free postage.
https://www.e-infin.com/au/item/605/...canon_ef_mount
I wouldn't hesitate to deal with them again.