What does it cost to level Engineering right now?

16.3kg in reagents at today's EU auction prices, over about 56 crafts. Sell the results and it comes back to 16.3kg.

Where do these numbers come from?

The skill thresholds are read from the game client data for build 12.1.0.68914. The prices are the region-wide auction house, refreshed every few minutes; these are the snapshot taken at 17:31 UTC.

Why does the route change when I reload?

Because the prices did. The cheapest recipe for a stretch of skill is whichever one's reagents are cheapest at that moment, and that moves through the day.

Profession leveling · Dragon Isles Engineering · EU · prices as of 17:31 UTC

Engineering leveling 1 → 100 · Dragon Isles Engineering

16.3kg in reagents over about 56 crafts. Sell what you make and it comes back to 16.3kg.

Start skill

Trainer recipes only

Recipe names carry the colour the profession window gives them: orange is a point every craft, yellow is three in four, green is one in four.

Before the first craft — buy it all at once

One trip to the auction house. Vendor lines are cheaper from the profession vendor than from the board.

ReagentNeedEachTotal

Arclight Capacitor×30278

8,340

×308,340

Reinforced Machine Chassis×15180

2,700

×152,700

Vibrant Wildercloth Bolt×6019

Greased-Up Gears×3027

Shock-Spring Coil×3917

Everburning Blasting Powder×1020

200

×10200

Handful of Serevite Bolts×702

140

×70140

Total16,293

Step 1 · Skill 1 → 10

Orange

Handful of Serevite Bolts

first craft: +Knowledge

About 9 crafts.249

per skill point27

Serevite Ore×36

Step 2 · Skill 10 → 42

Orange→Yellow

Draconium Delver's Helmet

needs the recipe itemfirst craft: +Knowledge

About 17 crafts.995

per skill point31

Smudged Lens×17

Handful of Serevite Bolts×34

Draconium Ore×34

Step 3 · Skill 42 → 47

Orange→Yellow

P.E.W. x2

needs the recipe itemfirst craft: +Knowledge

About 2 crafts.320

per skill point64

Rousing Fire×2

Handful of Serevite Bolts×10

Everburning Blasting Powder×10

Serevite Ore×10

Step 4 · Skill 47 → 57

Orange→Yellow

Overcharged Overclocker

needs the recipe itemfirst craft: +Knowledge

About 13 crafts.1,710

per skill point171

Rousing Fire×65

Handful of Serevite Bolts×26

Shock-Spring Coil×39

Step 5 · Skill 57 → 100

Orange

Overengineered Sleeve Extenders

needs the recipe itemfirst craft: +Knowledge

About 15 crafts.13,017

per skill point302

Vibrant Wildercloth Bolt×60

Reinforced Machine Chassis×15

Greased-Up Gears×30

Arclight Capacitor×30

Skill 100 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Draconium Delver's Helmet171

1717

P.E.W. x222

Overcharged Overclocker1330

133

Handful of Serevite Bolts920

Capped at what the market takes in 3 days, so a route never pretends to sell hundreds at once.

Back in your pocket16,266

What's worth crafting with Engineering right now

Questions

How this route is built

What does it cost to level Engineering right now?: 16.3kg in reagents at today's EU auction prices, over about 56 crafts. Sell the results and it comes back to 16.3kg.
Where do these numbers come from?: The skill thresholds are read from the game client data for build 12.1.0.68914. The prices are the region-wide auction house, refreshed every few minutes; these are the snapshot taken at 17:31 UTC.
Why does the route change when I reload?: Because the prices did. The cheapest recipe for a stretch of skill is whichever one's reagents are cheapest at that moment, and that moves through the day.

A first craft pays Knowledge, not skill, so it is shown as a badge and left out of the craft count. Vendor reagents are priced at the lower of the vendor and the auction house.