A Bit of advice on pricing?

I've been asked to sell a set of Callaway X20 Tour irons with Project X shafts and multi-compound grips 3-PW.  Cracking condition as well.

I've looked on ebay and the same clubs are only available in the States for about £250-300.  I'm I looking at the same price?

Any suggestions from people in Pro shops would be helpful. Or any offers.

Cheers Gents. 

Sent a request to Golf Bidder for an idea for a bottom price.  I suppose if the father in law gets desperate it'll be there.

I was thinking around £200 when he first asked me.  I might start them on ebay for that price and see how we get on.

Cheers Chris.