"Yeah Baby , $400 is fine. In fact, since you've done your homework you know that bike is rare and so I'll gladly give you $600 , cash, no check. Can't get it tonight, but I'll be there tomorrow. Most likely late. Day after for sure. I really,really want it and $600 is really fair- PLEASE DON"T SELL ITTO ANYONE ELSE!!!"
But that's just me......