With 14,000 down it should be a pretty nominal risk of default. 

Why doesn't he just charge a nominal fee for the course and have everyone who takes the course to agree to pay him 10% of their earnings the first 2 or 3 years?

Or they could hire a title abstractor to do that search for them at a nominal cost.

Not using a nominal rate per door for analyzing cash flow. 

You get all your mail scanned electronically and you can forward anything that you want for a nominal fee.

Two incidents of thefts from my rehabs was a no-brainer to get the WI/FI which is nominal to me calling the police, informing the insurance company only to be told (whatever) wasn't covered, and of course my deductible is $1000. 

I have 375k into the deal, rented the property for two years at a 140kgross and will pay the owner off that note in about 11 mos. the property is now around 650-700k. depends on your situation but for the nominal difference your talking I say go for it but if you're leveraging the upfront you need to cash in the overage for the appraisal and vice versa if your cash up front then have the seller carry a note from my experience- it also shows that the seller believes in the project by doing so if they won't carry a note separately id potentially walk but thats because we do mostly cash deals and the inability of them to believe in what I am willing turn me off to the deal when your talking about this gap

Or would it just even out and have negligible effect (i.e. more supply & equally more demand = nominal gains in appreciate or appreciation stasis).

I nominate you to make it happen!

There's one house titled to Rad Diversified REIT Inc and it was nominally transferred from an affiliate company for $1.