Explosive Sheep

About 10s 0c on Beta · Horde (2 hours ago), 29s 99c on Beta · Alliance (13 hours ago), and 11s 0c on Beta · Horde (2 days ago), from player scans. A vendor pays 10s 0c, so the auction house pays 1× more.

No. It is in Classic Era too, with the same item level, vendor price and stack size.

Sell it to a vendor. A stack of 5 brings 50s 0c there — more than the auction house nets after its 5% cut.