Feral Blade

About 36s 0c on Beta · Horde (9 hours ago) and 62s 0c on Beta · Alliance (10 hours ago), from player scans. A vendor pays 4s 81c, so the auction house pays 7.1× 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 34s 20c there, against 4s 81c at a vendor.