I think you're asking price is high. Put yourself in the "buyers" situation. If they have $1000 to spend... what should they buy?
If you price shop the 5D II (because I also had one to sell and that's exactly what I did) you'll find that most of them seem to be going for roughly right around $750. You'll find most tend to be priced within roughly $100 of that price.
I found some interesting things... if it's just the camera body, you'd be expected to have absolutely everything (including the box the camera came in) and the body had better look "new" if you expect to charge near the top price (and that maybe gets you to $850).
I also noticed that while a "high" shutter count might hurt the price, having a "low" shutter count doesn't necessarily help the price. In other words if your camera had 5000 clicks and someone else's had 10,000 clicks the *actual* number of clicks probably isn't too critical. Most consumers don't know about shutter count. On the other hand, if your camera had 200,000 clicks... that would probably hurt the value (but the camera would also probably "look" like it had been used enough to do 200,000 clicks so that'd hurt the value as well.)
I also found that accessories don't count for much. For example, my camera had the Canon battery grip (Canon brand - not a 3rd party). While those grips sell "new" for around $250-300... the grip might only help bump up the camera's price by about $50. People who "know" about grips might want one, but most people who are shopping for "used" gear because they either don't want or can't afford a "new" camera are the same people who are not going to pay a premium for accessories. The accessories wont do much to increase the price but they might sway a buy who has a choice of two cameras at nearly the same price to go with yours because the accessories sweeten the deal.
You might be thinking... "Hey, these cameras sell at the large camera stores for $1000." and yes... they do... but consumers are more willing to pay a little more at a big name store than they are willing to give to a private seller.
If I'm shopping
eBay or Craigslist, I'm looking for DEALS... I'm definitely NOT looking to pay as much as I could pay by just going to
B&H,
Adorama, or
KEH. You will never be able to charge (as a private seller) what a big-name store can charge for the same product. The big name stores pretty much guarantee that the condition of the used product is accurately represented... and that's something you definitely do not get from
eBay or Craigslist.
So yes... I think you're asking too much.
I found that my own 5D II camera, in it's condition, would have netted me about $700 (tops) in trade in value (some places only wanted to offer me closer to $500) for my camera body which based on their rules for scrutinizing the condition of the product would have put it in the like-new category.
So in my situation, I considered options...
I could re-purpose the camera by doing a conversion to make it an InfraRed camera. I also considered re-puposing it for astrophotography by doing a full-spectrum mod. But as I already have a nice dedicated astrophotography camera and I while I felt IR photography might be "fun", I also felt it might be "limited" (how often am I really going to use that?) So I nixed those ideas.
I also considered maybe just finding a school with a camera club and donating it -- I could take the tax write-off for fair market value. Yes, the tax benefit is worth a lot less than I could by selling it to a private party... but I'd have some satisfaction in knowing that it would be used by lots of people and for education.
In the end, one of my friends just happened to mention to my spouse that he had a 7D (original) and was thinking he wanted a full-frame body, but he wanted to find a "used" camera (even his 7D was a used camera). So I hooked him up with a deal on it by basically selling it for a price that was halfway between trade-in value and private-seller value. He got a deal by paying less then he'd pay elsewhere, and I got a tiny bit more than I'd have got in trade -- we both win and I don't have to deal with the hassles of eBay and Craigslist (and not having to deal with eBay and Craigslist ads and sellers is "worth" something to me.)