Sylvan Cloak

About 85s 0c on Beta · Alliance (4 hours ago), 1g 88s on Beta · Horde (9 hours ago), and 1g 88s on Beta · Horde (1 day ago), from player scans. A vendor pays 7s 44c, 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 80s 75c there, against 7s 44c at a vendor.