Just know that everyone that uses the wholesaling investing strategy isn't in the same category that you clearly boxed them into, and there are "some" who do good, ethical business.

If that's the case, (I believe) the ethical thing to do is to tell the student, "I don't think you have what it takes and I don't want to take your money.

It's never too early or late (ethically or morally) because someone has decided to deal with stuff in order to receive current or future benefits of a property. 

Maybe it's more an ethical question or is it a business question(?)...

Many may have done 100 deals this past year, but someone who does things wrong and never knows it, never gets hung, may advise you based on their success (and luck).I'd suggest also you calibrate your guru meter based on ethics in business, knowing what is legal and customary as well as fair dealings expected will be a good gauge in selecting an advisor in any business.I'm not totally anti-guru, most I see passing themselves off as experts (self appointed experts at that) have no business attempting to go where they go sometimes.

Those that know me, understand my work ethic and disposition aren't reflective of my age however when meeting new business partners they only have my image to base their judgement off.

I really don't know anything about it.although I have seen Brian  over the 3 years I have been here give some detailed information for free on this site.. and unlike many guru's I actually agreed with his ethics and following the law. as an aside my daddy taught me day one in sales punctuality is the key... so blowing off appointments or being late or what have you is not good.. unless you call ahead of time and explain you may be a little late.

Ethics are a huge part of it as well. 

Good for you Garbriel.Great way to show work ethic.  

Is it ethical to tell the other showings that we already have a full price offer?