Rune of Teleportation

About 35s 0c on Beta · Horde (6 hours ago), 60s 0c on Beta · Horde (23 hours ago), and 19s 0c on Beta · Alliance (1 day ago), from player scans. A vendor pays 2s 50c, so the auction house pays 13.3× 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 3g 32s there, against 25s 0c at a vendor.