Deadly Bronze Poniard

About 90s 0c on Beta · Horde (4 hours ago), 70s 0c on Beta · Horde (21 hours ago), and 88s 0c on Beta · Alliance (22 hours ago), from player scans. A vendor pays 27s 31c, so the auction house pays 3.1× 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 1 brings about 85s 50c there, against 27s 31c at a vendor.