Fact sheet sample sent to potential customers could show off your expertise in your business area. These fact sheet sample could include statistics to show off how you compare to your competitors. Pick statistics that correlate with your area or with the median income of the area that your business services to make sure that customers do not feel alienated.
Make sure that the fact sheet sample is not overflowing with information though. Just give enough information to make your business look good while leaving the customer with some curiosity as to how well your business actually stacks up to the competitors.
Of course adding coupons/discounts to these face sheets could only help more with business!