How much does an iphone cost by itself (just the cost of the phone)?

How much does an iphone cost by itself (just the cost of the phone)?

Depends on the generation and how much memory. Try going to amazon.com or the official apple website to find prices.

It depends how many gb you want and where you buy it but the ones i have seen with 16 gb cost about $500

Alex is correct, the best source of information is the official Apple website since prices fluctuate depending on where you are. Here is retail pricing from the online US Apple Store:

iPhone 4S 16GB: US$649
iPhone 4S 16GB: US$749
iPhone 4S 16GB: US$849

Online pricing in other areas will vary. Applicable taxes and other costs not included in the aforementioned prices.

Of course, online pricing from other vendors will vary. It's up to you to Search The Fine Internet for the latest pricing.

It depends on the generation, the size of the memory and also if it is brand new or refurbished iphone.