Spellbinder Belt

About 3s 0c on Beta · Alliance (10 hours ago) and 1s 0c on Beta · Horde (11 hours ago), from player scans. A vendor pays 61c, so the auction house pays 4.7× 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 2s 85c there, against 61c at a vendor.