i have that same PSU and yes the cables do look cool but are a beast to ziptie together and cram behind the drive bays and not have them slip out and spring back inside your case.
He's got an ultra what it looks like. and i think corsair PSU's are sleeved with like a mesh where as these are slick and plastic like coating. From what i've seen dealt with corsair PSU's they felt like they were pretty flexible to me. speaking of the 620Hx PSU from corsair that is.
Yeah, i know but he's selling to people that don't know about pc's and just want to game on them. They are pretty cool computers though and as I said earlier, the cable management is a piece of art.