How much will I get for my unlocked gsm iphone 4?

2010 model iphone. It has a little scratch on the front screen but barley noticeable. It comes with earbuds with a mic and 2 cases and stylus with front and back screen protecter. Looks kinda new. And it's an unlocked gsm iPhone. It is currently out of service. What do you think I will get out of it. I want to get an iPhone 5 unlocked. And if I do we'll where is the best place to sell it to get the most money out of it for an iPhone 5

For an original iPhone 4, don't expect to get much… Although you will probably get about $100 out of it, even iPhone 3G and iPhone 3GS are still going for about $100 on eBay!

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