How much for iMac 20 inch Mid 2007

Its a 20 inch mid 2007 iMac, comes with a Apple wireless keyboard and wireless track pad.
2.4GHz Intel Core 2 Duo
2GB RAM and 320GB SATA HD
ElCapitan installed and in OutOfBox status.
In Original Box
What would be a good price for selling?

via ehMac.ca http://ift.tt/1I0fM7i