Oct. 15—Has any technological development in the past 50 years changed day-to-day life in America as much as the bar code? Basically every product we buy today has to be scanned using a bar code ...

You'll pay between $2 and $2.88 for a Quest bar, while Kirkland Signature protein bars are sold in a package of 20 for $26.49, which breaks down to $1.36 per bar.

Quest Nutrition, a maker of protein bars ranked No. 2 on the Inc. 5000 list of the fastest growing U.S. companies in 2014, was acquired on August 22 by Simply Good Foods Co. for $1 billion.