I live in Korea and have seen many Horusbennu branded accessories on local online shops. I have bought their extension tube and wanting to buy one of the many tripods they offer. Not that I can vouch for their quality, but its the price that attracted me (although honestly I'm quite convinced with their tripods). Funnily, on local shops it's always listed as Chinese brand, but the website (from the other Horusbennu thread) is indeed in Korean and the company introduction also states that they're local Korean company so I don't know.
Back to the lens. Here is the lens on a Korean online shop:
Gmarket - Buy and Sell Apparel, Cosmetics, Jewelry, Electronics & more at low price
(Price is cheaper than ebay but international shipping cost is not free)
Right before the sample pics, it's stated (in Korean): The sample picture is taken with Pentax K100D camera and Phoenix 50mm 1.7 lens.
There you go
Phoenix is just another name for Vivitar / Polar / Samyang lens. And I also agree the price is too high, well the price is 'normal' in Korea, the Pentax A 50mm 1.7 price is easily sold twice this lens price. But since you don't live in Korea might as well get other, better lens with cheaper price on ebay.