Spider Ichor

About 33c on Beta · Horde (9 hours ago) and 18c on Beta · Alliance (11 hours ago), from player scans. A vendor pays 16c, so the auction house pays 2× more.

3 recipes: Slimy Smoothie, Simple Poultice, and Blood Sausage.

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 3s 14c there, against 1s 60c at a vendor.