If he’s averaging 10k of extra available cash every month that’s only saving about $1k annually vs throwing that at conventional inefficiently at end of month.

To me not even close.Continue this velocity banking process and you will pay off your entire mortgage and HELOC combo in six years and four months.If you had simply made an extra payment of $1,000 a month to your mortgage during this time without utilizing the Velocity Banking strategy and paycheck-parking strategies, it would take you six years and five months to pay off your entire mortgage.

Thx  I would say the best raw data is the MLS...

It could be any side-hustle you want just as long as you like it and your able to save some extra $$$.2.

Well now year 1 has an extra deduction of $800 ($2,000 total) causing tax to go down that year.

I'm a sucker for data so I'm always looking for new sources.

Record lease data using software or spreadsheets, correcting any errors or discrepancies.   

If we had more data, lets say 20-100 people and all say the price is the problem, then yes, I would agree 100%. 

If you don't need the extra money what is your hurry to pay it off?  

You might also want to look at recent sales data to see how fast homes are selling and which neighborhoods are on the rise.