Can Mote of Darkness be bought on the auction house?

No. It binds when picked up, so it is earned as a drop, quest reward, or vendor purchase and cannot be traded or listed.

How much does Mote of Darkness cost on the auction house?

No auction house scans for Normal Horde yet. The price appears here after the first scan from the AHledger addon.

Uncommon reagent · item level 1 · id 216645

Mote of Darkness is an uncommon reagent item in World of Warcraft: Forever. It binds when picked up and is unique.

The item reads: "Dark energy permeates this tiny floating speck of energy. Who knows what sort of amazing magics this could power?"

What is Mote of Darkness?: Mote of Darkness is an uncommon reagent item in World of Warcraft: Forever. It binds when picked up and is unique.
Can Mote of Darkness be bought on the auction house?: No. It binds when picked up, so it is earned as a drop, quest reward, or vendor purchase and cannot be traded or listed.
How much does Mote of Darkness cost on the auction house?: No auction house scans for Normal Horde yet. The price appears here after the first scan from the AHledger addon.
Is Mote of Darkness different in Forever than in Classic Era?: No. The Forever beta keeps the same item level, requirements, and vendor prices as Classic Era.