What does it cost to level Alchemy right now?

33.7kg in reagents at today's TW auction prices, over about 75 crafts. Sell the results and it comes back to 25.2kg.

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 14:54 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 · Midnight Alchemy · TW · prices as of 14:54 UTC

Alchemy leveling 1 → 100

33.7kg in reagents over about 75 crafts. Sell what you make and it comes back to 25.2kg.

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

Sunglass Vial×92150

13,800

×9213,800

Nocturnal Lotus×24298

Mote of Wild Magic×1169

Mote of Primal Energy×1165

635

×116635

Tranquility Bloom×3061

581

×306581

Mote of Pure Void×485

240

×48240

Total33,670

Step 1 · Skill 1 → 30

Orange

Composite Flora

researchfirst craft: +Knowledge

About 29 crafts.5,251

per skill point181

Mote of Wild Magic×116

Mote of Primal Energy×116

Tranquility Bloom×174

Argentleaf×116

Step 2 · Skill 30 → 70

Orange→Yellow

Vicious Thalassian Flask of Honor

needs the recipe itemfirst craft: +Knowledge

About 22 crafts.10,520

per skill point263

Sunglass Vial×44

Tranquility Bloom×132

Sanguithorn×176

Azeroot×132

Step 3 · Skill 70 → 100

Orange→Green

Flask of the Magisters

researchfirst craft: +Knowledge

About 24 crafts.17,898

per skill point596

Skill 100 — done. Now sell what you made.

Crafted itemUnitsEachTotal

Flask of the Magisters24158

Vicious Thalassian Flask of Honor2299

2,194

222,194

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

Back in your pocket25,184

What's worth crafting with Alchemy right now

Questions

How this route is built

What does it cost to level Alchemy right now?: 33.7kg in reagents at today's TW auction prices, over about 75 crafts. Sell the results and it comes back to 25.2kg.
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 14:54 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.