Recently Wall Street Journal (WJ) published an interesting analysis by Redfin and Grammarly on the effects of spelling and grammatical errors on real estate listings. Apparently, "typos and missing commas can slow sales and drag down prices" (WSJ, M12, Friday May 9, 2014).
One of the VPs (vice presidents) at Redfin infers that potential buyers view a realtor who is attentive to the details in his/her real estate listings as someone who will also handle sales carefully. By the same token, a sloppily written listing could signal a "potentially sloppy transaction" (WSJ, M12, May 9, 2014).
For English teachers searching for real-life examples of why grammar matters, this is a great instance of the impact good or poor grammar can have on people's lives in real economic terms.