I was recently asked this question:  Traditionally one of the ways our business has promoted our products is via a local letter drop. Is there a more cost-effective way to promote our products to a wider audience?

There are certainly other ways of promoting your business.  Without knowing the retail sector you’re in, here are some ideas:
Ramp up your bag stuffers.  Change them regularly and hand them out to every customer who purchases in your store;
Ensure you capture customer’s email addresses so that you can send out emails, offers and newsletters;
Start a facebook page, ensuring you spend money on facebook ads targeted towards your market ie geographic, gender and age group;