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The single-use bag policy will go into effect on New Year's Day in Colorado and Jan. 18 in New York. Walmart has been touting this effort since at least 2020, collaborating with both Target and CVS. Customers can buy reusable bags at Walmart from 74 cents to $3.98, depending on the size and function.If you're a Walmart shopper in Colorado or New York, you better be ready to bring your own bag to the retailer — or be ready to spend a little...