Heck it has NEVER been a low money craft to those willing to work it the game is chokced full of quest that need eng items, I am so kind i have made a list for you, remmeber some of the low level stuff is either alliance or horde only, they both get one.
Bronze Tube,The Touch of Zanzil and Look To The Stars . Both are Alliance quest
Deadly Blunderbuss, used in Horde quest Warsong supplies
Gyrochronatom is the objective of "Gyro... What?" badlands quest
Advanced Target Dummy is used in the quest "Gizmo for Warug"
so the kind quest would have to be "That's Asking A Lot" it wants ,Thorium Bar,Hi-Explosive Bomb,Unstable Trigger and it wants them all in healthy amounts
Chasing A-Me 01 , wants a Mithi casing
and EVERY one of those quest have been in the game for over a year, they have bough piles of moutns for me. So the the chump that says there is no money in the trade need to get off the can and start working, you are using a lazy mans excuse. Heck it has even got better , with AQ stuff and now the new AD quest stuff is even more in demand like
The Ironforge Brigade Needs Explosives, wants Dense Blasting Powder(sorry hordies, alliance only)
or Craftsman's Writ - Thorium Tube(AD quest)
There are much much more, jsut do a lil research.
so in addation to what Morthandeus listed it is a source of money!!