When I see a player being bought for 16 million I think wow they must be a top player, but really that fee is about the level of a prime Zat Knight. Like how when I saw Steve Stone being purchased for 5 million I thought yeah he's probably a pretty average premier league midfielder, but someone who saw Roy Keane be bought for 3.75 million probably thought Steve Stone would be a world beater.
I mean he did get a hattrick against Chester, but I wouldn't say he was better than Roy Keane.
Edit: Having said that though, Roy Keane never scored a hat trick so...
Edit2: Steve Stone was an unused sub against Chester and didn't score a hat trick. My brain is mostly cake.