Bright Baubles

About 9s 0c on Beta · Horde (6 hours ago), 5s 0c on Beta · Horde (23 hours ago), and 3s 49c on Beta · Alliance (1 day ago), from player scans. A vendor pays 62c, so the auction house pays 13.8× more.

No. It is in Classic Era too, with the same item level, vendor price and stack size.

Sell it on the auction house. After the 5% cut a stack of 20 brings about 1g 71s there, against 12s 40c at a vendor.