What made you interested in investing in this type of deal?

This would allow you to sell a property you had purchased with the intent of holding for productive investment use. 

@Polat Caglayan very ambiguosu question, but read the helpful info below to guide your next set of questions:)-------------------------------------------------------------------------------------------Recommend you first figure out the property Class you want to invest in, THEN figure out the corresponding location to invest in.Property Class will typically dictate the Class of tenant you get, which greatly IMPACTS rental income stability and property maintenance/damage by tenants.If you apply Class A assumptions to a Class B or C purchase, your expectations won’t be met and it may be a financial disaster.If you buy/renovate a property in Class D area to Class A standards, what quality of tenant will you get?

That is what got me to this post.

Does this approach seem reasonable, or am I undervaluing the property?

He even chatted with me through this forum (Bigger Pockets) and was very encouraging that you can even do it just with free stuff out there.  

Hope this helps!

They could just use Redfin.

Our property manager is really aggressive and doing all she can, but we're going on 3 months at this point and we need to get these units rented.Link to one of the units listed- https://www.trulia.com/building/3640-reading-road-1-3640-rea...  

Besides reading and listening to podcasts, my wife and I attend a local real estate investor meetup that has been extremely beneficial.