But also, location is a key factor so make sure your comps are quantifiable in the market.

So is it fair to state that this study is a good resource to quantify the 50% rule for SFR's?

Unfortunately, it's impossible to determine those numbers with any accuracy, as the future spending due to decisions today isn't always quantifiable at the outset.

I don't know how to quantify it, and I don't know how to protect myself from it.

So when I work with someone I look at probability of a project funding and closing.If they meet x,y,z criteria then chances are high of success.If they fall into other categories the chances of success are very low.There are exceptions but you run a profitable business by sticking to what works the most.Everything you do needs to bring a quantifiable return on time equaling money.I personally like to run my business working with serious individuals and creating a lasting lifelong relationship.You learn their expectations and vice versa and create a team with great results.I do not work residential.

Perhaps Brad can give us some examples of deals closed where their "free" can actually be quantified.

I'm working on a product geared toward wholesalers and haven't been able to quantify the market to see if this will make financial sense.

Again, the immigrants also contribute to GDP, which is much harder to quantify than taxes and insurance costs, but is just as important (actually, I'd say it was more important).

It depends on the quality of the information he or she is selling and whether or not it has quantifiable monetary value using normal metrics that a layman can translate into profits, not whether or not they are utilizing proven marketing techniques to sell a product.

For now, it's important for you to understand that there really is a method to the madness, and that there is a way to use real numbers to quantify how leverage can work for/against you.