iPhone 4S, iOS6, 32GB value?

[FNH15]

Title says it all. I have an iPhone 4S with the above mentioned specs, unlocked, and was wondering what a fair market value for it is? I would've posted in the classified section, but I couldn't find it (if it even exists). It has one crack, in the bottom right of the screen.

 

[Gav2k]

Your post count isn't high enough to see the market place.

As for the phone it's only worth £80-100 but with a crack a little less

 

[C DM]

Probably would be best to look at eBay or Craigslist or some similar sites to see what similar devices might be going for.