Where can i buy an iphone 5s or 5c?

I want to buy an iphone 5s or 5c, but i'm with metro pcs so where can i buy the phone its self so i can start using it with metro. Also can i use my current sim and just put it in the iphone or do i have to buy a whole new one. Where is the best place to buy the iphone in your opion without signing any contract or anything.

How to turn off Find my iphone for iCloud?

I was on my original account but i tried to back up my stuff from my laptop. So i accidentally logged out into a different icloud account. I don't know the password to either the phone or the email. Is there a way I can erase the whole thing and sign into my original account?

What are good multiplayer games apps for iphone?

I accidentally downloaded a multiplayer game app called words with friends, and I was surprised by how good it is, I kept playing it for hours, so what are other good multiplayer games apps in the iphone like words with friends?

I need a free music downloader app for my iPhone?

I used to have a app that I could download music from mp3skull but now I can't find one. The only other options are soundcloud downloaders and those do not have enough music options and are mostly full of covers.

I'm looking for a good MP3 player to take to work with me?

I would like to purchase an MP3 player that has good sound quality, has a long battery life and that is simple/portable I can use my regular earphones with.
I currently have an iPod touch 4th Gen and the sound quality is just not good, especially compared to my iPhone 4, it doesn't compare.
I don't think I want another Apple product and I want one at a low price as Christmas is coming and I'm running low on cash. I can sell my iPod for one.

Does anyone have a recommendation of what might be good for me?

How to download GB4ios on IPhone 5c iOS 8.1?

So I tried downloading the 2.1 version and the window that said "install" came up. I clicked that, it began downloading, but then another window popped up saying it could not be downloaded at this time. What do I do? No jailbreak