Night Watch Shortsword

About 2g 0s on Beta · Alliance (1 hour ago), 1g 29s on Beta · Horde (7 hours ago), and 1g 49s on Beta · Horde (1 day ago), from player scans. A vendor pays 17s 42c, so the auction house pays 10.9× 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 1g 90s there, against 17s 42c at a vendor.