My Motorola V8 for a 8GB iPhone

( Both in MINT condition )

I got my phone for $300 and the guy got his for $560. He also wants me to add $150 on top of the trade. His phone is also in mint condition and comes with a screen protector and a leather case. I myself like the iPhone as i had a 4GB before but traded it. Im just wondering if this would be a good trade cause im kinda low on cash.

let me know, thanks