Used Hifiman RE-600 Songbird for $130 [updated]

The Hifiman RE-600 Songbird in-ears are available in “Used – Acceptable” condition for $130 by Amazon Warehouse Deals actual or “Used – Very Good” condition for $140 by seller HeadAmp with the order fulfilled by Amazon.

PS: there is a listing for $130 by a different seller which says one side is louder than the other, so that’s probably as big of a red flag as far as red flags go 🙂