Dull Kodo Tooth

About 1s 0c on Beta · Horde (6 hours ago) and 12s 0c on Beta · Horde (24 hours ago), from player scans. A vendor pays 13c, so the auction house pays 7.3× 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 9s 50c there, against 1s 30c at a vendor.