You invest in something else, for example in a more profitable place, and the you use the proceeds of the investment to buy a property in Costa Rica when you retire.

Here is one example, and here is another and another. 

Example https://www.facebook.com/groups/denverwholesalers/

For example, what would the cash flow be like after you renovate and lease out at the new rates?

In davidson county most people book an STR to be close to downtown or at least close to somewhere cool as a secondary priority (like 5 points or 12 south for example).If you have an STR in white house it's going to need to make up for location.

For example, one exemption is tied to your total revenue which is $5M in gross sales or receipts in a calendar year. 

The classic example of this is "a printer".

@Melvin Lamont Evans Welcome to BiggerPocketsThe search function can help you find some relevant informationhere is an example https://www.biggerpockets.com/forums/88/topics/1049073-my-fi...

For example we are lenders and buy notes and we use madison management out of nevada.

For example, I have a private lender that gives me 8-9% on the rate for rehab costs when I am usually getting about 10.25-11.25% on the rehab costs from hard money lenders, and the HML is not sending the full money upfront, but in draws (this is normal for most HML) which is a lot more cumbersome.