My thought was they owe a fiduciary duty to the client to use all the readily available tools to market the property.   

I think there are some on BP that feel it’s their duty to police everyone without being fully educated.

What do you see as the on-site manager’s duties?

(10% buyer's premium to auctioneer, does not seem to be affiliated with "auction house")Insurance - $500 (guess)Broker's commission - N/A (no loan)Other - stamp duty, survey costs, conveyance fees etc. - $500 (guess)Permits and required documentsApplication for Building Permit - $100 bond (refundable) + $90 permit feeUtility Shutoff Certificate - free?

I've done deals without RE agents and the real estate attorney did everything an agent would have done as well as the typical lawyer duties as well. 

That nice big fridge looks like it's 1" from the wall.Might be a good idea to double check the manual and make sure it does not need to be 4 inches from the wall (many do).If it needs to come out further, the cabinets over the fridge may be unusable, and be able to be re-located over the toilet in a bathroom (if the sides are white), or in a garage.Then you could just lower the cabinets.But in reality, the (heavy duty) step stool (for heavy people) might be the cheapest thing.Good Luck!

They failed in their duty to confirm utilities had been transferred into the tenant's name prior to turning the property over to them.

You also have a duty to tell people you meet that are considering buying a home what the value is.If you are an investor and talk a person into selling below market value and don’t disclose you are an agent you can be in trouble.As a licensed agent and investor you can be on top of all the trends, see properties first, and have a pulse on the market.

Your claim of being a victim will not negate any claim he could make against you; you had a duty to safeguard/protect and it wasn't met. 

Good to see people with experience of different culture, I think that's vital these days.