Is this a good deal for an iPhone 4S?

I'm planning to get an iPhone 5S, but first, I have to sell my old phone. I'm going to post a Kijiji ad for a black mint condition iPhone 4S 16GB, along with a Mophie charging case (regularly sells for $89.99), an Otterbox, and a pretty good iPhone dock, along with the charger for the phone. Does $275 sound reasonable? Or should I sell it for less/more? I live in Canada, by the way.

Very nice.a friend of mine JUST bought a used 4s (with nothing else) for 250€ :)
your offer is great

Hey I'm also in Canada so I know the market.

I just bought a new iPhone 4 8GB (all I could afford) during the summer and it cost me $200. You can assume your 4S is worth at least $200 by itself. The fact that yours is 16GB makes it worth more than my 8GB. $200 for a used yet mint-condition iPhone 4S is a good deal. Now you're adding the accessories too. The charging case is worth like you said $90.So I wouldn't sell it for any less than $70 itself. That's $270 for the phone and charging case. Brand new Otterbox cases cost about $40, so add at least $30 to your total. I. E. $300 for the phone, charging case, and Otterbox. You're selling a dock too, and I don't know how good it is or what kind it is but definitely add upwards of $20 for that. No one will buy a phone without the charger so the charger doesn't add anything to the price.

I say sell that stuff for around $320-$350.

If you want to go lower, $300 is not bad.

Great offer. Put it on Craigslist and it will definitely get sold.

Look no further than http://phonetroops.com/sell-your-smartphone/
those kinds of sites are experts at pricing your used phone and electronics and help you to sell.