Plans: Mithril Spurs

About 15g 0s on Beta · Horde (1 hour ago), 35g 0s on Beta · Alliance (18 hours ago), and 75g 0s on Beta · Horde (2 days ago), from player scans. A vendor pays 25s 0c, so the auction house pays 57× 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 14g 25s there, against 25s 0c at a vendor.