Also how do i know if a duplex is worth the price?

We were able to get the first viewing on the home with our agent the same evening.

I viewed it with a relative of the owner, and in the meantime another investor had arrived and was speaking to the owner outside the property.

As another datapoint, I frequently check the web traffic of the big players as a proxy of popularity, investor views, etc.  

I am trying to figure out if it is worth putting into my monthly marketing budget.

So long as it immediately appraises for circa $1.3M, if you pay the $900k all cash up front, you can apply for a "Delayed Financing Exception" which should get you all your cash back (ie. 70% of appraisal) straight away. https://www.fanniemae.com/content/guide/selling/b2...From the Sellers point of view, so long as your Lender is on board, they don't REALLY care if their money is from you or your bank at closing time - they just want their money guaranteed!

I lived in that type of construction growing up and started out that way personally and while it takes it's toll, it is definitely worth it.

Not worth it.

So if they all sold for about an 8% cap rate then your $20,000 NOI is worth about $250,000.You are wasting your time trying to figure what the seller will sell to you for and then figuring a cap rate based on that guess. 

Hold back enough $$ in escrow to cover rent or eviction. messy but worth it.