Warped Blade

About 36s 0c on Beta · Alliance (10 hours ago) and 20s 0c on Beta · Horde (16 hours ago), from player scans. A vendor pays 9s 88c, so the auction house pays 3.5× 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 9s 88c at a vendor.