Can I buy an iPhone 4s off of eBay and activate it on US Cellular Prepaid?

I really want (And Need) a new phone, I have been without one for two months now and it is kinda horrible to have to borrow a friend's phone when you are out or at a school event. I pay my own phone bill but everyone else that was on the same contract as I didn't pay theirs and now it is delinquent. I haven't had the money to get a new phone without a contract, or anyone to go on a plan with so I can get a phone. I was wondering if I could buy a US Cellular iPhone 4s off of Ebay and Activate it on USCC if it originally came from them? Can I activate an unlocked CDMA one on them also? *USCC Is CDMA* Thanks in advance!

I honestly don't recommend buying on eBay, because i got scammed multiple times. If your in the market for a new cell phone, i highly recommend this website:
http://www.suliworldcapital.com/

They cell the cheapest cell phones, but there's a catch. The cell phones are fake as in not made by apple or samsung. They are 1:1 high quality replicas, that look, feel and operate, 100% like the real deal. I recently bought the i5c cell phone off their website and it is just amazing. I recently had the real iphone 5 and i can say for sure there not much difference between them at all. This site sells unlocked cell phones for unbelievable prices. So i highly recommend you give them a try.