Quick what's it worth thread but as the part is already sold this isn't a veiled for sale thread!

I have a Z32 MAF from my impreza with a loom that plugs into the existing loom to save chopping the loom but because you don't see them come up for sale too often I don't know what to charge I also can't remember what I paid for it because I bought so many part for the car when I was building it so what should I charge the buyer?

Thanks in advance

Paul