Be knowlegeable. I'm going to frequent the stores that can answer my questions.

Don't be pompous. Treat all your customers with respect, regardless of age, race, sex, or appearance. I don't go to one of my local shops because I always get a greater-than-thou feeling when I'm in there. I usually do my shopping in jeans and a tee shirt and I look very young, but I ain't lookin' for Swishers.

Make suggestions. I always make an effort to ask for a suggestion if I feel the salesperson is knowledgable. Last time I was at my favorite shop, I was selecting some sticks and the salesman said, "Have you tried these yet? From what you're picking, I think you'd like them."

Carry a good variety. A lot of cigar shops only carry expensive sticks. Carry good inexpensive sticks and good expensive sticks and you can bring in a lot of business. My favorite shop has the largest variety in the state.

Like CC86 said, carry the high end fuentes (and Hemingway short stories), davidoff, and padron. But if you don't do the above, I still won't go to your store very often.