Above is a quick cost comparison chart reflecting the widely used “uncorded” foam disposable earplug ($0.20/pair – $0.35/pair) versus a set of “corded” Insta-Mold’s. This example makes a conservative assumption that an employee will use only two pairs of “uncorded” foam plugs each day for a total year of 240 work days. (“Corded” foam earplugs are generally $0.15 to $0.20 more expensive per pair).