How much are my mavics cxp 12 worth?

yeah, you're right. when one finds a bargain on ebay out of luck or whatever, it defines the whole market. I mean, I've bought a new blackberry on ebay for 25euros because the seller chose a stupid ending time for his auction so, now, every blackberry has to be sold for 25euros, tops! yeah yeah, i get your point mate. thanks!

Not at all, just maybe the ones on ebay. I thought it an impartial and relevant piece of info that might have helped your decision....perhaps... to see what a pair went for recently. Take into consideration whatever elements of the Sellers listing savvy you wish.
As for the "luck or whatever", the whatever was typing CXP12 and Mavic into google and Hey Presto!!! Luck didn't come into it.

A bargain for someone, for sure, there seems to be many around at the moment...
perhaps your buyer will wait for such a bargain, or perhaps you can charge him desperation tax, but that's your judgement call.
Their value on here is fairly clear from previous posts.