Pattern: Red Linen Bag

About 2s 0c on Beta · Alliance (32 minutes ago), 7s 0c on Beta · Horde (6 hours ago), and 6s 0c on Beta · Horde (1 day ago), from player scans. A vendor pays 50c, so the auction house pays 3.8× 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 1 brings about 1s 90c there, against 50c at a vendor.