I love home depot because i get military discount there!

After which they invested $190k for $10800/year return or 5.6% (not even discounting for the 2.5 years to recover the initial negative equity).  

Initial Equity: The discount you achieve when buying below market value.

Something many new investors don't think about is that property managers usually negotiate volume discounts for some of this stuff.

We are only selling completed homes with our own in house financing currently at 3.75%, a huge discount from most bank rates.We are a long time property provider for some of the bigger podcasters: Real Estate Guys Radio, Marco Santorelli (Norada), Kathy Fetke (RWN) Jason Hartman ( Empowerd Investor) GRE (Keith Weinhold), Whitecoat Investor Group and more We also work with American Homes for Rent, Invitation Homes, Crescent, Haven Realty (JP Morgan) to name a few on the institutional side We are partially owned as of 2022 by Sumitomom Forestry, which means we have no bank debt and self fund all our building projects.

I got a reasonable discount on the purchase price, and it has made me a good amount of money over the years.

As an alumni of BPCON, you can snag your ticket now for a discount if you haven't already! 

Whenever I have used seller financing as a buyer I always put in the note that the note holder must give me the first right of refusal to purchase my note at the same discount they are selling it at.

Let's say my competitors are at $100/night.. what's a reasonable discount?  

I'm unsure if you would be able to combine both loans given that the HELOC is tied to a different property than the one you got traditional financing on.A work around is if you are able to purchase the new property with the HELOC at a significant enough discount, bring the property value up via renovations or additions, then refinance the property, pulling out enough money to repay the HELOC.