They claim to charge in the "high 4 figures" - one web source says it's $4800 - to join their group and get access to their network and resources.  

It really depends on your goals, budget, target areas, etc though. 

The proper answer is "it depends" I don't know anything about your case.I do prefer simple over unnecessary complexity.

Deduct NEW property taxes after you buyDeduct home insurance costsDeduct maintenance percentage, typically 10%Deduct vacancy+tenant nonperformance percentage(we recommend 5% for Class A, 10% Class B, 20% Class C, good luck with Class D)Deduct whatever dollar/percentage of cashflow you wantNow, what you have left over is the amount for debt service.Enter it into a mortgage calculator, with current interest rate for an investment property, to determine your maximum mortgage amount.Divide the mortgage amount by either 75% or 80%, depending on the required down payment percentage - this is your tentative price to offer.If the property needs repairs, you'll want to deduct 110%-120% of the estimated repairs from this amount.Be sure to also research the ARV and make sure it's 10-20% higher than your tentative purchase price.As long as the ARV checks out, this is the purchase price to offer.It is probably significantly below the asking price.

Depending on the size of your portfolio and what you're doing in real estate, it may or may not be worth it setting up all these entities.I don't run any other businesses. 

Although it depends n your budgets and expectations. $430 could be chicken feed to you.How big are your pockets lol.Obviously you want them to get bigger!

The flat fee buyer agency fee reduces the amount of the buyer credit/refund, generally by $6,000 (although options range from $999 to $8999, depending on how much help the buyer wants from the agent).

@Annie DriscollSubsequent borrowing by the AITD holder seems to be dependent on the lender.

Depends on your market and competition.  

The better option would be depending on your priorities.