Where can I purchase a (gently) used iPhone 4S for a reasonable price?

I'm finally going to cave in after years of Android phones and Blackberry battery problems. There's only so much more I can take… My whole family has iPhones (my mom recently upgraded from a 3GS to a 5 and she adores it) and the majority of my friends have them as well. I heard Game Stop sells them, but I'm not eligible for an upgrade yet so what would be my best option in terms of relatively cheap pricing? (Best Buy? Walmart?) Thanks

P.S. I love Siri! I'm tiring of using other people's phones to get my Siri Fix! LOL
<3

Added (1). They're all pretty pricy so far… However, I just got promoted. Maybe I should treat myself:?

<3

Added (2). R u an iPhone user? LOL

IPhone 4s Wi-Fi greyed out bluetooth not working after screen repair

Just replaced the LCD/digitizer on my iPhone 4s. Almost everything works, but the option for Wi-Fi in the settings menu is now greyed out, and when I click on bluetooth, there's just a spinning circle like its searching (but its not). I must have missed a step or plugged in the wrong cable or something… What could it be?

This iPhone is unlocked for T-Mobile w/o a warranty so I can't simply talk to Apple
If you need any pictures or more info please let me know!

How to take a screenshot on SnapChat?

My friends have been showing me screenshots from their iPhones/IPads/IPods of pictures sent to them on The app SnapChat. I tried it and it didn't work. It always ends up taking a picture of the snap box. Is there a trick or a special way to do it?

Can i use a AT&T iPhone 4 if it is reported stolen?

An i use a AT&T iPhone 4 if it is reported stolen?
i traded my iPhone for a white iPhone 4. And the guy said he gonna report it stolen, if you took out the sim card. Can i unlock it and use it on t-mobile still?

Should I charge my iPhone 5?

First time use and battery is gone die, should I let it die or charge it? Some say its better to let it drain all out is that true?

Is 4gb for an iPhone good for a person like me?

I just want to go on facebook, intsgram, and watch occasional youtube videos (not likely, probably just at home).Is 4gb of data good? I'll probably only be on after school and on the weekends and stuff.

Can you use c spire iphone 5 on verizon?

The reason i ask is because my friend wants to sell it to me for $300 but i wanna make sure you can use it on Verizon since that's my carrier.

Added (1). How do you unlock it? And are you sure because some you can't unlock, like you would not be able to use the Sprint iPhone 5 on Verizon.