domain Appraise these domains

[Tfusion]

Hello, i have 4 Domain Names i would like to sell... but before i need some aprraisals from professionals so i decided to ask here.
Domains:

Domain 1:

Domain Name goldsurf.us
Creation Date Jan 24, 2007
End Time Jan 23, 2008

Domain 2:

Domain Name cash2post.com
Creation Date Dec 30, 2006
End Time Dec 30, 2007

Domain 3:

Domain Name iacidtech.com
Creation Date Dec 10, 2006
End Time Dec 10, 2007

Domain 4:

Domain Name steelfx.com
Creation Date Jan 13, 2007
End Time Jan 13, 2008

Thanks!!