How much will iPhone 5 cost in a year from now?

I'm planning how much money I need to save from my job this summer and I'm wondering if anyone has an idea about how much the iPhone 5 will drop in price around this time next year?

I have an iPhone 5 and its price is 900$ or something like that.
So yeah xD

All Apples products lose value at the same rate so look at how much the iPhone 4s cost now and that is your answer which is

about $99 for 16 Gigs (with a plan of course) without a plan will be about $400

By this time next year the 5S should have come out therefore the 5 would be the $99 iPhone.