How much should I sell my factory unlocked iPhone 4 for?

It is 16gb, black.
Very good condition.
It is factory unlocked, meaning it's not connected to any carrier or contract.
4th generation, NOT 4s.
No scratches.
Will be set back to factory mode, wiped out.

It comes with:
-4 girlish iPhone cases
-Zombie snow white decal already on the back which is removable
-$25 screen saver still in great condition
-Original box, no charger or ear buds

That's pretty much it! I'm selling it on Craigslist. How much would be a good price, please let it be reasonable, as I want to get as much money as possible but still want it to sell.

Will apple replace my damaged iPhone?

My iPhone was stolen and I recently got it back - only now it has a cracked screen, cracked back, broken microphone (left), broken loud/silent button, and I can no longer swipe across on the screen! I'm so upset to have gotten it back in this condition but grateful I got it back at all. Will apple replace my iPhone? I know there'll be a fee but will they?

What IPhone 5 to get? 16gb or 32gb?

This is going to be my first IPhone to get i'm getting the white/silver but i wana know what size capacity to get 16gb or 32gb currently i have about 120 songs but as time goes ill get more and delete more. As for apps i have a android and i have about 5 apps only because that's all it can hold but id like some more apps maybe 10? And movies i'm not planning on having many maybe 1 or 2 at the most maybe 3 maybe. Can someone please help with this question

Unlocking Iphone to use different sim card?

Hi. I was going to travel to Spain so I want to unlock my Iphone so I can use a different sim card. I was wondering how I would do this process and what are some of the advantages/disadvantages to unlocking the Iphone 4.

Ideas for a 3-5 minute demonstration?

I'm doing an interview where I have to demonstrate my teaching style using a 3-5 minute lesson which could be on anything that I want. I'm looking for some ideas that aren't too simple or too complex for this project. I was considering breaking down a law into its elements for interpretation but there are so many caveats that I feel it might be too confusing if it's condensed to 5 minutes. I also considered demonstrating a napkin folding technique but these seemed too simple.

Let me know if you can think of something that I could teach in 3-5 minutes effectively (we're allowed to use video so I could do a cooking lesson but I don't have a camera outside of my iphone/macbook and it is awkward to film on both of those).

Added (1). I have to demonstrate how to do something…

I just got a mophie juice pack air and it isn't charging my iPhone 4S?

Okay so when I have the phone in the case and the case is plugged into an outlet, it charges my iPhone fine but then when I un-plug it and try to turn on the case it won't charge my iPhone… What's going on?

The box says compatibility for the iPhone 4 and 4S. So i don't know… Help!

My iPhone 4S says 1% all the time?

I was using my phone yesterday a lot, and i had realized it said it was on 1% battery life, but I never got alerts for it being low or anything. So I plugged it in the charger and it said it was charging, but as I was using it I noticed it still said 1%.

So I left my phone alone for a long while so it can charge, I come back to it and it still says 1%! I unplugged it and thought maybe it's just a phone glitch and when I unplugged it, it died, like it showed that wheel of it turning off. And I was just like "wtttfff."

So I put it back n charge and it shows that charge icon, but after some hours it never increased. So i let it charge all night, then it turned back on at 9am and it still said 1%!

I tried to restore it on itunes and wait 3 hours only to find it couldn't restore because of a system error. I have insurance on it, but I want to see if I can fix it cause I can't back anything up now and I have a lot of stuff I want on this phone.

Added (1). FORGOT TO MENTION this phone is LITERALLY not even a month old yet, I just bought it brand new.

Sound on my iPhone stopped working?

I was watching a video on YouTube and it just stopped working. It was working fine just a minute ago and now it wants to start acting like a little punk. I tried turning on the music and it said can't complete action. Please tell me there's a way to fix this crap?