Runed Copper Gauntlets

About 4s 0c on Beta · Horde (6 hours ago), 4s 0c on Beta · Alliance (1 day ago), and 4s 0c on Beta · Horde (1 day ago), from player scans. A vendor pays 71c, so the auction house pays 5.4× 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 3s 80c there, against 71c at a vendor.