What does it cost to level Leatherworking right now?

5.4kg in reagents at today's US auction prices, over about 102 crafts. Sell the results and it comes back to 5.4kg.

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 17:57 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 · Draenor Leatherworking · US · prices as of 17:57 UTC

Leatherworking leveling 1 → 100 · Draenor Leatherworking

5.4kg in reagents over about 102 crafts. Sell what you make and it comes back to 5.4kg.

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

Total5,436

Step 1 · Skill 1 → 10

Yellow

Relic of the Past I

About 12 crafts.225

per skill point25

Raw Beast Hide×60

Curing Salt×12

Step 2 · Skill 10 → 100

Orange

Leather Refurbishing Kit

needs the recipe item

About 90 crafts.5,211

per skill point57

Raw Beast Hide×2700

Skill 100 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Leather Refurbishing Kit9030

9027

Relic of the Past I121

1212

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

Back in your pocket5,409

What's worth crafting with Leatherworking right now

Questions

How this route is built

What does it cost to level Leatherworking right now?: 5.4kg in reagents at today's US auction prices, over about 102 crafts. Sell the results and it comes back to 5.4kg.
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 17:57 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.