What does it cost to level Leatherworking right now?

28.4kg in reagents at today's KR auction prices, over about 93 crafts. Sell the results and it comes back to 28.4kg.

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 17:26 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 · Northrend Leatherworking · KR · prices as of 17:26 UTC

Leatherworking leveling 1 → 75 · Northrend Leatherworking

28.4kg in reagents over about 93 crafts. Sell what you make and it comes back to 28.4kg.

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

Icy Dragonscale Fragment×11099

Crystallized Shadow×107

×1072

Total28,418

Step 1 · Skill 1 → 5

Yellow→Green

Icy Dragonscale

trainer

About 11 crafts.108

per skill point27

Icy Dragonscale Fragment×110

Step 2 · Skill 5 → 20

Orange→Yellow

Heavy Borean Leather

trainer

About 19 crafts.1,584

per skill point105

Borean Leather×114

Step 3 · Skill 20 → 25

Orange

Arctic Wristguards

trainer

About 5 crafts.834

per skill point166

Borean Leather×60

Step 4 · Skill 25 → 30

Yellow

Arctic Belt

trainer

About 7 crafts.973

per skill point194

Borean Leather×70

Step 5 · Skill 30 → 35

Yellow

Arctic Wristguards

trainer

About 7 crafts.1,167

per skill point233

Borean Leather×84

Step 6 · Skill 35 → 40

Orange

Scaled Icewalkers

trainer

About 5 crafts.1,182

per skill point236

Icy Dragonscale×150

Crystallized Shadow×10

Step 7 · Skill 40 → 55

Orange→Yellow

Eaglebane Bracers

trainer

About 17 crafts.5,032

per skill point335

Icy Dragonscale×680

Step 8 · Skill 55 → 65

Orange→Yellow

Icescale Leg Armor

trainer

About 12 crafts.6,951

per skill point695

Arctic Fur×24

Icy Dragonscale×24

Frozen Orb×12

Step 9 · Skill 65 → 75

Orange

Ice Striker's Cloak

trainer

About 10 crafts.10,585

per skill point1,058

Skill 75 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Heavy Borean Leather191

1925

Icescale Leg Armor122

1224

Icy Dragonscale111

1111

Eaglebane Bracers1715

172

Arctic Wristguards1215

Ice Striker's Cloak1060

106

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

Back in your pocket28,352

What's worth crafting with Leatherworking right now

Questions

How this route is built

What does it cost to level Leatherworking right now?: 28.4kg in reagents at today's KR auction prices, over about 93 crafts. Sell the results and it comes back to 28.4kg.
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 17:26 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.