Used Superlux HD 661 semi-open for $23

On the bargain side of things, the Superlux HD 661 semi-open over-ears are available in “Used – Like New” condition (missing box) for $23 by Kellards with the offer fulfilled by Amazon os they are eligible for Prime shipping. They average 4.2 out of 5 based on 320+ customer reviews.

PS: Superlux has multiple models with similar-sounding names, so if you are not already familiar with their line-up, check up on them with your favorite internet search engine.