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These Audio-Technica ATH-ANC23BK QuietPoint Active Noise-Cancelling In-Ear Headphones drop from $79.99 to $39.95 with free shipping at BuyDig. This is the best price we could found for these headphones by $10. They can reduce background noise by up to 85% and come with a two-pin airline adapter. They've also received an average rating of 4 out of 5 from 286 Amazon reviewers. There is no sales tax (except NJ).