Evo 4g for Nexus S 4g + cash


So I have a like new (zero scratches) always in an otterbox Evo 4g (white) that I would love to trade for a Nexus S 4g. I am willing to trade the Evo 4g plus some cash if you want.
I am interested in a vanilla Android experience and not ready for an upgrade til Fall.

I am hoping maybe someone is interested in a trade. Msg me with how much cash it would take or put it on here.