Common · Armor · Mail · Wrist
Same as in Classic Era.
About 1s 0c on Beta · Alliance (7 hours ago), 2s 0c on Beta · Horde (10 hours ago), and 2s 0c on Beta · Horde (2 days ago), from player scans. A vendor pays 89c, so the auction house pays 1.1× 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 95c there, against 89c at a vendor.
There's no auction house to price until then.
Beta prices — not launch pricesNormal, PvP, and RP open Nov 4