Used Creative Labs HN-700 ANC for $16

On the less-than-an-ATM-bill front, especially if you get Prime shipping benefits, the old (discontinued) Creative Labs HN-700 with active noise cancelling is available in “Used – Like New” condition for around $16~ by Amazon Warehouse Deals actual. The ANC circuit is powered by two AAA batteries. It averages 3.6 out of 5 based on 15 customer reviews. The usual ANC caveats apply.