Rune of Teleportation

About 60s 0c on Beta · Horde (9 hours ago) and 19s 0c on Beta · Alliance (11 hours ago), from player scans. A vendor pays 2s 50c, so the auction house pays 22.8× 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 10 brings about 5g 70s there, against 25s 0c at a vendor.