What does it cost to level Engineering right now?

305.5kg in reagents at today's TW auction prices, over about 119 crafts. Sell the results and it comes back to 305kg.

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 17:54 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 · Khaz Algar Engineering · TW · prices as of 17:54 UTC

Engineering leveling 1 → 120 · Khaz Algar Engineering

305.5kg in reagents over about 119 crafts. Sell what you make and it comes back to 305kg.

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

Gyrating Gear×460239

109,940

×460109,940

Handful of Bismuth Bolts×225830

67,740

×225867,740

Whimsical Wiring×62290

Entropy Enhancer×42325

Stunning Sapphire×4222

924

×42924

Crystalline Powder×211

×2121

Total305,453

Step 1 · Skill 1 → 17

Orange→Yellow

Handful of Bismuth Bolts

trainerfirst craft: +Knowledge

About 17 crafts.1,336

per skill point83

Bismuth×68

Step 2 · Skill 17 → 37

Orange→Yellow

Safety Switch

trainerfirst craft: +Knowledge

About 21 crafts.3,345

per skill point167

Crystalline Powder×21

Bismuth×105

Aqirite×63

Step 3 · Skill 37 → 45

Orange→Yellow

Bismuth-Fueled Samophlange

researchfirst craft: +Knowledge

About 5 crafts.4,490

per skill point561

Handful of Bismuth Bolts×40

Gyrating Gear×10

Whimsical Wiring×10

Step 4 · Skill 45 → 70

Orange→Green

Adjustable Cogwheel

specializationfirst craft: +Knowledge

About 42 crafts.25,907

per skill point1,036

Stunning Sapphire×42

Handful of Bismuth Bolts×42

Gyrating Gear×42

Entropy Enhancer×42

Step 5 · Skill 70 → 120

Orange→Green

P.0.W. x2

specializationfirst craft: +Knowledge

About 34 crafts.270,373

per skill point5,407

Handful of Bismuth Bolts×2176

Skill 120 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Adjustable Cogwheel427

333

42333

Bismuth-Fueled Samophlange518

590

Safety Switch211

2125

Handful of Bismuth Bolts1715

172

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

Back in your pocket305,001

What's worth crafting with Engineering right now

Questions

How this route is built

What does it cost to level Engineering right now?: 305.5kg in reagents at today's TW auction prices, over about 119 crafts. Sell the results and it comes back to 305kg.
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 17:54 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.