How to negotiate when buying multiple properties from one owner?

[Shane Farmer]

We're currently in the market looking at small multi's and we've come across a seller who has two duplexes listed. We've confirmed that they're open to considering a package deal for the two properties. We own the most recent and comparable comp on the market and got it for $25k less than what each of the properties is listed for. I'd love to know how to approach negotiating two properties at once, what we should be thinking about, how to make it appealing to them while being profitable for us etc.?

Additional info: We know they have several more properties in town so I want this to be a winning deal for everyone so that we'd be considered a go-to when they decide to list the others. 

[Adam Tafel]

This is a question we've been throwing around recently: in this market, who expects a premium (or discount) on a small package - seller or buyer? There are strong arguments for both. If only buying 2 I would be happy paying market value for each. @Jeff Schemmel grew up in Southern MN, I'm assuming you know the area well but he might be a good resource if you need one.