This guy and me have become very good friends. On Remora, Archer's knifes are going for 50-60 k mostly, although I've just got another 3 knifes from 3 pops in a row and trying to sell them for 70 k since about 5/6 others have on the sales history.
He's camped full-time on Remora by a gil seller called Heavenvku. He gets his fair share of pops simply because he's there 24/7...whenever he's been there and I have camping it I've won, 7-0 to me against him so far. He got his friend to help last time, didn't seem very good either.
I'm 9/9 on him so far, I'll assume the knife is 100%. Never got the bow tho, doesn't look very good anyhow.