Sales. One component of your profit margin is your sales. Generally, the more coffee you sell, the higher your profit. There are a couple of things you can do to make sure your sales are as high as they can be. First, serve quality products. Second, hire a friendly staff.
Here, Annette Bening is in nerd glasses, those thick black frames that have become increasingly popular over the past 4 years (or so). You can see how her look is instantly transformed from the previous picture, just because of a change in frames. 3 of 19 Show All.
How much will you pay for glasses at one of these big box retailers: Frames average around60-80, with designer frames costing more. Single vision lenses cost around20, more for progressives and other kinds of lenses. Pros: Convenient locations, you can try on lots of frames, they accept some kinds of insurance.