N stands for non-substitutable.

@Ryan Guffey Yes that is correct the 6 k was my contingency.My deal analyzer program is generac.Its good for a quick look ,but no substitute for a bid from a contractor.My HML asked for my SOW I didn’t realize they would use it as the Bible for my reimbursement’s.Live and learn.My first deal was also an open house,all investors had an hour to view the property and make an offer.I was so concerned about overpaying,but apparently it worked out well.The other 8-10 investors were sent home and I got the deal.

While reading books, watching videos, and analyzing deals are valuable ways to educate yourself, nothing substitutes real world experience or the opportunity to learn from an expert.

N stands for non-substitutable.

I substitute Pursuit of Happiness with Property because I've heard this is how it was originally written and property rights are so important in my opinion.

He's a substitute teacher and she makes $90k/year as a physical therapist.

There really is no substitute for experience.

Gives a great snapshot of an area but as always, this is a supporting tool and not a substitution for your own analysis in your area and proper due diligence. 

A collection of random tips from online forums will not substitute for it.

(PS Zillow and other websites' values are no substitute for an appraisal and their algorithms routinely over-value properties,  So you may not get that price.)