PLANO — At 6:30 a.m., the sun hasn't risen yet, and the streets in this Dallas suburb are deserted. But in a beige strip mall surrounded by newly built homes, hundreds of people are waiting in line, shuffling their feet in the cold air.

They are here for the grand opening of natural foods chain Sunflower Farmers Market's first store in Texas . With stores that are smaller than those of traditional grocers, Colorado-based Sunflower touts its rock-bottom prices, convenience and wide selection of produce.

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