It can be delivered in a soft way but the understanding is that if you do not have results in XX time frame then a change will be made.

I'm a fellow driver and real estate investor.

This would need to be delivered personally or by mail to the tenant's last known address... either the address you provided or the rental unit and then forwarded to you, which would occur if you put in a forwarding address with the U.S.

So, that's why I chose that number.Once I have that Discount Rate (12%), I know my initial cash investment (I spent $77,000 on the property) and I know my income stream ($800 per month for 125 months), I let the spreadsheet do the NPV calculation for me (using the "NPV" function in Excel).What the NPV function will spit out is the answer to the question, "How much would that $100,000 -- given that it is delivered in $800 increments over the next 10.5 years -- be worth in today's dollars given our ability to invest it at our Discount Rate?"  

Plus my other local supplier deliver for free.

For the most cost-effectiveness & efficiency, does one usually purchase materials needed & either have the contractor pick them up or delivered to the site?  

My most recent professional background consists of owning my own small trucking company at 21 where I was contracted with FedEx and grew it from a crew of 5 drivers to 9 full time drivers before selling the business this past February to move south.

your value to your end buyer is to deliver them a property at a significant discount with as much disclosure as possible. 

RE Investing reminds me to the Drivers License testing, it is not hard but some people afraid of it anyway, and sometime you might have to try 2-3 times to get it right,  but 5 years later when you are rolling down the street, who cares that it toke a few tries right?

You are in the driver's seat.