Why is Sleep Karma more expensive than some tapes on Amazon?

Price differences in mouth tape come down to three things: material, adhesive quality, and testing. Budget tapes ($5-8 for 30 strips) typically use basic paper or polyethylene with generic adhesive. Sleep Karma uses bamboo silk fabric with ISO 10993-1 certified medical-grade adhesive — that certification alone requires biocompatibility testing that most budget brands skip entirely. In our adhesive safety analysis, several cheap Amazon tapes couldn't provide any adhesive certification. Whether the premium is worth it depends on your priorities — if you're taping every night for months, adhesive safety matters.