How much should I sell my white iPhone 4S 16 GB for?

It has new front and back plates which means it's not scratched at all and it's a Virgin Mobile carrier, so it basically comes with no contract

Sell it on eBay if you can. If you do that, sell it for a little more than what you purchased it for and people will be able to bid on it. Just don't let them take the price down too much, or else that would not be beneficial. I would start the bidding at around $300 or $230. Hope I helped!

Depends on how long you've had it. If it's for a year or longer then the ideal price would be around 200-300 dollars but if it is like 6 months old then it can go for 350-400 dollars.