Is it worth getting the battery fixed on my iPhone 4s?

My iPhone 4s will no longer charge. I was just wondering if it was worth getting the battery replaced or if I should just get the iPhone 5. I've had the 4s since it came out, which was around October 2011. Sometimes I can't even get through the day on 1 charge, so it might be the battery but it has been slow and randomly crashing. It will die with like 10 percent battery sometimes. Maybe it's just old? And it does act up too sometimes. I heard they purposely make the batteries crappy so you have to either get a new phone or replace it. What should I do?

Buying a blacklisted iphone att ebay or person?

I qant to buy a iphone 5 att and unlockb it so i use on tmobile but I heard so much about iphones being blacklisted and getting it and having to go through a lot to settle it I want to know if I can unl ock it it if its blacklisted? Or if thats the case can't the person just get one and unlock it before it get reported? And its good or is it still bad? So what i'm asking is if I do get one do I hurry abd unlcok it so i want get in trouble? Or can I just unlock blacklisted or not and have a nice clean unlockrd iphone 5

Buying iphone from ebay or person?

My name is Robert and i'm wondering to buy a iphone from ebay or look for a person that can sell me one but people were telling me to be very carful aboit that because it could be "blacklisted" or reported stolen (I want to buy iphone 5 att so I can unlock it to use it on tmobile) now if this does happen is there anyway I can unlock it and use it on tmobile without as much hassle getting it into att? And if is that the case could the person just steal one and unlock it before someone reports it?

Is there somewhere I can unlock my iPhone 4s?

I have an iPhone 4s issued to AT&T, I want to get T-mobile on it, however, it needs to be unlocked (not jailbroken). Are there any places that offer unlocking? I'm worried that if I do it myself, I'll get scammed by some website.

How Much Will I Get For This Stuff?

I want to buy a working used Xbox 360, two wireless controllers, and orange box. I have a wii with the top panel missing (still works fine) and 20 or so games in good condition. I also have a scratched up 3G iPhone. How much will I get from selling this stuff, and where should I sell it/buy the Xbox things? I can't do websites except for amazon. I'm in the Austin area if that helps.

What does charging is not supported with this accessory mean?

When I charge my Ipod touch 4g on my computer or the wall it sometime says "
charging is not supported with this accessory". EVEN ON My moms IPHONE 4 it also says "
charging is not supported with this accessory"… Help! Does this also mean Virus? OR used the wrong Charger? Help Please Thanks

Added (1). What do I do to get this remove?

Broken Jail broken Iphone 4

So a couple weeks ago I jailbroke my iphone 4s with Cydia and its has been fine, I recently downloaded Bytafont to change my font, after a couple days with a new font I wanted to go back to the original font, so I went onto Bytafont and pressed the restore button, it said something about an error but I just pressed continue and it turned off like it was going to respring, but now it won't turn on, its stuck on the apple logo screen and it keeps vibrating. How can I fix it! I'm going to try and restore it on ITunes now.