Some of the fakes that are of good quality can run in the hundreds of dollars.
Maybe post a pic. Some of the fakes are so dang crappy, they arent worth $5.
I wouldn't. Somewhere down the line someone is going to sell it as being genuine. And possessing it opens your reputation to being someone who deals in fake stuff.
I would buy it if it works good ... I would not worry about it being fake you know the guy you bought it from knew.... So it's fake so what go for it...