how much is my maf worth?

[S7000EY]

hey its been a while since iv been on since my car got written off 4 months ago now im driving a citroen c2 vts had to get something small for the girlfriend to be able 2 drive lol

but to the point I managed to get my 6000mile old genuine rover maf out of it before it got crushed and was just wondering how much I should ask for it as I have somebody interested in buying it but not sure on what price I should ask for it as he wont make an offer and wants a asking price, any help would be appreciated