Hey there, please take a moment to look around at the other postings on determining the value of gear.
Simply put, there is no actual known market value, so as it's commonly said, an item is worth exactly as much as someone is willing to pay for it. The best bet is to look at completed eBay auctions, and see what people have been willing to pay previously.
If I recall correctly, a guy on here sold a unit of pretty equal value for about $650 Canadian, though he had it posted for quite some time.
Good luck.