He disclosed that he has a medical marijuana card but would only smoke outside. 

When the rent rates stabilize, I suspect they'll bring it back.I wouldn't try it in a location like Portland, but 99% of the country would be fine with a policy like this as long as it is disclosed and applied equally.

The guru your son is learning this technique from is likely not telling your son that the deal will almost certainly encourage your son to get an "off-market" deal from a "wholesaler" who is unlikely to properly disclose the details of the property or encourage an inspection. 

Unfortunately, it's now going to get more complicated:(There are two types of approaches PMCs use to bill for maintenance:1) In-house ServiceTechs on the payroll, so owners are billed for their time by the hour.While the labor charges above are useful, they don't cover the true costs a PMC incurs, like:- Payroll costs for FICA, Social Security, Medicare, etc. that typically add 25-40% to the hourly rate- Medical insurance costs for the worker- Payroll processing costs to handle all of the above- Liability insurance costs in case worker damages something or injures someone- Workman's Compensation insurance- Costs of vehicles and tools- and more...Typically the management contract will disclose the total hourly rate an owner will be charged.

And, yes, inspection deficiencies can hurt your valuation because once they are disclosed, you are required to disclose those to future buyers. 

Verify its condition and ensure the seller discloses any known issues.

That should have probably been disclosed to you prior to purchasing.

My two cents is that the non-live broadcast is a commonly used marketing tool If it was "live" when it was first broadcast, then it is not a "scam" in my opinion but a rebroadcast that does not disclose that fact (not as professional as it could be).

If they aren't charging a pre-disclosed & agreed upon Markup - they are probably hiding something to make money for their time.Good luck!

Being licensed means you have to disclose you are an agent.