Samsung Nexus S Unlocked 16GB !

I have a SAMSUNG NEXUS S for sale Had this phone for just under two years and gave it in for repair and where it was flashed and now just got my upgrade hence no longer need the phone (in great working condition since it just come back from CPW). This phone can also be upgraded to the new Android software which has just come out. This phone was purchased from Carphone Warehouse hence is unlocked 16GB internal memory Collection only, please let me know if interested.