[7Figures2Commas]

That's according to one company's analysis which is not described in any detail. Worth noting is this:

> R.B. was also running TV ads, handing out samples and doing in-store marketing at the same time, but the company says the Facebook campaign contributed to the gains.

Don't get me wrong: there are some very smart people trying to figure the ROI calculus out. But that doesn't mean that producing solid answers is easy or even possible.

One of the biggest problems in my opinion is that few people involved have an incentive to come to the conclusion that Facebook ads aren't effective.

Facebook obviously wants to prove that its ads work. Brand marketers want to prove that the money they spend isn't being wasted. And the data/measurement companies, many of which count the brand marketers as clients and Facebook as a partner, wouldn't have a business if they concluded that there was no ROI.

The Upton Sinclair quote "It is difficult to get a man to understand something, when his salary depends on his not understanding it" is very appropriate to many aspects of modern day marketing.