Common · Consumable · Other
Same as in Classic Era.
About 9s 0c on Beta · Horde (3 hours ago), 8s 91c on Beta · Alliance (14 hours ago), and 11s 25c on Beta · Horde (2 days ago), from player scans. A vendor pays 40c, so the auction house pays 21.4× 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 20 brings about 1g 71s there, against 8s 0c at a vendor.
There's no auction house to price until then.
Beta prices — not launch pricesNormal, PvP, and RP open Nov 4