What does it cost to level Leatherworking right now?

13.8kg in reagents at today's TW auction prices, over about 377 crafts. Sell the results and it comes back to 13.7kg.

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 · Classic Leatherworking · TW · prices as of 17:54 UTC

Leatherworking leveling 1 → 340 · Classic Leatherworking

13.8kg in reagents over about 377 crafts. Sell what you make and it comes back to 13.7kg.

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

Ruined Leather Scraps×992

Total13,841

Step 1 · Skill 1 → 30

Orange→Yellow

Light Leather

About 33 crafts.242

per skill point8

Ruined Leather Scraps×99

Step 2 · Skill 30 → 200

Orange

Cured Thick Hide

trainer

About 170 crafts.1,875

per skill point11

Thick Hide×170

Deeprock Salt×170

Step 3 · Skill 200 → 340

Orange→Green

Core Armor Kit

needs the recipe item

About 174 crafts.11,724

per skill point83

Core Leather×522

Rune Thread×348

Skill 340 — done. Now sell what you made.

Crafted itemUnitsEachTotal

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

Back in your pocket13,746

What's worth crafting with Leatherworking right now

Questions

How this route is built

What does it cost to level Leatherworking right now?: 13.8kg in reagents at today's TW auction prices, over about 377 crafts. Sell the results and it comes back to 13.7kg.
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.