Bad Deal?

[Zack Polino]

Hello

I've owned a 2 unit double near Buffalo, NY for about 6 years now. I rent both units which pay for my mortgage and leave me an additional $200 a month. I always thought this was a pretty good deal and was looking to purchase something similiar in the area to do the same thing. With prices falling I can find many doubles in the area for 50k-80k that bring 500-650 per unit in rent. I was recently told that my current situation is bad...but was then promted to buy this person's book. But it got me thinking...Is this a bad deal??