I have a stock air filter that came off of my 2006 FX HO when it had 32 hours on if anyone is interested. I'm not really sure what it's worth but I know a new one is about $99. I think this should be worth 35 or so but I'd entertain any offer if my price isn't reasonable (I've never sold used parts so i'm not really sure what they bring, sorry). Click image for larger version. 

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