I'm currently in the middle of a debate about whether duped unusuals effect the price of high or low tier hats more
His argument for high tier: Since there are fewer high tiers, a dupe would have a bigger impact. It's common sense; adding an extra rare hat would have a bigger impact than adding an extra common hat. Also that the people willing to spend more money on a hat would be more picky on the hat they get
My argument for low tier: There are so many people that want a high tier (I used Cloudy Team Captain as my example), that they wouldn't care if it's duped just as long as they get the hat and effect. It also goes the other way, there's a lower demand and higher number of low tiers, that people could easily find a cleaner low tier, as opposed to a high tier that might only have 1 or 2 in existence. Finally, most people looking for Cloudy Team Captains aren't planning on buying them just to trade it for another unusual like most lower tiers, they're usually there for the status.
Anyway, what do you all think? Do dupes effect higher or lower tier hats more?