$2.00/1 – ZonePerfect All-Natural Nutrition bars or 3 singles – (zoneperfect.com)
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I just confirmed that ZonePerfect bars are $1.29 each or 3/$3.00 at Walgreens!

Buy 3 ZonePerfect single bars, 1.58-1.76 oz $1.00 each, when you buy 3
$2.00/1 – ZonePerfect All-Natural Nutrition bars or 3 singles – (zoneperfect.com)

Final Price: $0.33 each, when you buy 3