I bought a 9.5 razr fit from ebay and it just doesn't perform. I had a 10.5 that I was fitted for and bought new but I cracked it with one too many crown hits, so I replaced it with a used 11.5. The 10.5 is hands down the longer club for my swing but the 11.5 is close, similar feel and with in 10 yards or so of my 10.5 razr. So, clubs being relatively cheap on ebay I thought I'd try a 9.5. The thing seams dead, I lose 20 yards. I can hit beautiful high trajectory shots that just go nowhere. 9.5 or adjusted to 10.5, makes no difference. dead club, feels dead too, you can just tell that the ball is slow off the face.
Beware ebay clubs. Lesson learned.