What does it cost to level Engineering right now?

11.2kg in reagents at today's EU auction prices, over about 141 crafts. Sell the results and it comes back to 11.1kg.

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 · Outland Engineering · EU · prices as of 17:31 UTC

Engineering leveling 1 → 75 · Outland Engineering

11.2kg in reagents over about 141 crafts. Sell what you make and it comes back to 11.1kg.

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

Felsteel Stabilizer×30199

5,999

×305,999

Hardened Adamantite Bar×4775

3,525

×473,525

Elemental Blasting Powder×8810

893

×88893

Hardened Adamantite Tube×963

568

×9568

Handful of Fel Iron Bolts×1217

Netherweave Cloth×889

×887

Total11,221

Step 1 · Skill 1 → 55

Orange→Green

White Smoke Flare

needs the recipe item

About 88 crafts.901

per skill point16

Elemental Blasting Powder×88

Netherweave Cloth×88

Step 2 · Skill 55 → 70

Yellow→Green

Hardened Adamantite Tube

trainer

About 47 crafts.3,525

per skill point235

Hardened Adamantite Bar×47

Step 3 · Skill 70 → 72

Yellow

Felsteel Boomstick

needs the recipe item

About 3 crafts.2,796

per skill point1,398

Hardened Adamantite Tube×3

Felsteel Stabilizer×12

Handful of Fel Iron Bolts×12

Step 4 · Skill 72 → 75

Orange

Stabilized Eternium Scope

needs the recipe item

About 3 crafts.3,998

per skill point1,332

Hardened Adamantite Tube×6

Felsteel Stabilizer×18

Star of Elune×6

Skill 75 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Hardened Adamantite Tube473

141

47141

White Smoke Flare2642

2646

Stabilized Eternium Scope32

Felsteel Boomstick315

345

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

Back in your pocket11,067

What's worth crafting with Engineering right now

Questions

How this route is built

What does it cost to level Engineering right now?: 11.2kg in reagents at today's EU auction prices, over about 141 crafts. Sell the results and it comes back to 11.1kg.
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.