Profession leveling · Northrend Cooking · US · prices as of 16:57 UTC
416g in reagents over about 164 crafts. Sell what you make and it comes back to 409g.
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.
One trip to the auction house. Vendor lines are cheaper from the profession vendor than from the board.
Step 2 · Skill 20 → 75
Orange→GreenStep 3 · Skill 75 → 85
GreenCapped at what the market takes in 3 days, so a route never pretends to sell hundreds at once.
Questions
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.