When should I sell my iphone 5s I'm getting?

I'm going to get the iphone 5s As soon as possible when it's released (have contract that needs to be renewed) and then sell it for profit.

When should I sell it on ebay to make the most money?

You might get $300-$400 when its released.
the 5S, and a cheap iphone will all be out in the next 3 months

Honestly, you can sell it on eBay, but you can also make a lot of money if you can sell it on Craigslist. I typically sell my old phones on Craigslist because you can typically get more money for it since there are less people selling their products on it. There are probably going to be at least a hundred iPhone 5S's on eBay by the time you sell it, but there will only be around 5 when you sell it on Craigslist.
I would recommend selling it as soon as you can, because it is probably going to be sold out for the first 2 weeks that it is out.
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