Mrrggl Smrrthle

About 3s 0c on Beta · Alliance (4 hours ago), 4s 99c on Beta · Horde (10 hours ago), and 3s 99c on Beta · Horde (1 day ago), from player scans. A vendor pays 1c, so the auction house pays 285× more.

Yes. It is new in Forever — Classic Era never had it.

Sell it on the auction house. After the 5% cut a stack of 20 brings about 57s 0c there, against 20c at a vendor.