I consider myself getting that % of a discount, so I reduce expenses rather than get a passive cashflow.

Other homes in the area seem to sell quickly and without discounts. 

I know of one builder that digs their heels in because honestly they can, they have lines of people buying their units so there is no incentive to give discounts.

A client has asked me before whether it better to ask my tenants shovel the driveway and walkways (and offer a slight discount on rent) or should I hire a company to do it myself to make sure it gets done properly?

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You only really have a couple of options.HELOC/LOC with the property as security.Refinance the first and walk away with a bigger first.A great way to get into properties with little money down though is to buy distressed assets at a discount, force appreciate them, and refinance to pull the cash out.

He came back and said that discussing price discounts that he's established with vendors wasn't appropriate.  

That said, I also have a friend who does flooring and gets a warehouse discount, so thats a plus. 

Purchase Discount: It's crucial to buy properties at a deep discount if you plan to BRRRR and get cash back.

You would have lot of negotiation later on with buyer.If discount is substantial I am not afraid buying home with roof issue or lien, that's easy to solve when you have the cash.