Cash Flow Questions!

[Adrienne Bryson]

There's a "set" of four SFR rentals up for sale right now. I did an analysis of the set on the BP rental calculator. The calculated cash flow would be about $712, which would be about $178 per property average, which would be a reasonable deal. But using the 50% rule, the cash flow would be about $450, which would only be about $112 per property average, which is low.

So my question is, how do I know if this is a good deal or not?  I'm not necessarily looking to buy  I'm just trying to get a good feel for what exactly a "deal" really looks like.  Of course there's the option of taking only one, or two, or three of the properties also.  If I were to buy, would it make more sense to only take the one(s) that come out best on paper?  Or would it be better to take the set and negotiate a lower purchase price or something?