3 ads: http://www.apple.com/iphone/ads/

However,

- $500+ and requiring a 2 year contract
- No access to SIM card (or no SIM card at all)
- No access to battery
- No 3G
- No 3rd party apps

- $500+ and requiring a 2 year contract ( OK pricing.. we have even more expensive once)
- No access to SIM card (or no SIM card at all) ( WHAT!!!!)
- No access to battery ( WHAT!!!!!! what happens if you want to get a second battery?)
- No 3G ( WHAT!!!, what do you do when you are not near a WiFi hotspot, use GPRS, have fun loading those google maps at 14400)
- No 3rd party apps ( fair enough... it has google maps ;-)