The Price/Quality Conundrum

Whole Foods locally will be doing a one-day sale tomorrow on boneless, skinless chicken breasts, $3.99/lb, which is $3 off their usual price. Meanwhile, sales on boneless, skinless chicken breasts will continue through tomorrow at $1.67/lb at Sprouts and $1.77/lb at Sunflower. (All sales are for the larger sized packages.) Virtues of the various products are touted in nebulous terms ("air chilled for premium flavor," "all natural"), leaving one to wonder just how they really stack up in quality and "naturalness," given the pretty big price differences.