Lesser Wizard's Robe

About 3g 20s on Beta · Horde (6 hours ago) and 3g 21s on Beta · Horde (23 hours ago), from player scans. A vendor pays 13s 38c, so the auction house pays 22.7× 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 3g 4s there, against 13s 38c at a vendor.