Level a profession

Steps

1–34Craft ~42× Rough Blasting Powdercosts 10silver92copperafter selling for 1silver68copper

recipe →each: 1× Rough Stone

34–58Craft ~39× Handful of Copper Boltscosts 34silver32copperafter selling for 4silver68copper

recipe →each: 1× Copper Bar

58–65Craft ~7× Arclight Spannercosts 31silver92copperafter selling for 10silver8copper

recipe →each: 6× Copper Bar

65–70Craft ~5× Copper Tubecosts 9silverafter selling for 6silver

recipe →each: 2× Copper Bar, 1× Weak Flux (vendor)

70–93Craft ~30× Coarse Blasting Powdercosts 26silver40copperafter selling for 3silver60copper

recipe →each: 1× Coarse Stone

93–104Craft ~30× Copper Tubecosts 54silverafter selling for 36silver

recipe →each: 2× Copper Bar, 1× Weak Flux (vendor)

104–115Craft ~13× Bronze Tubecosts 1gold16silver74copperafter selling for 26silver

recipe →each: 2× Bronze Bar, 1× Weak Flux (vendor)

115–135Craft ~21× Flying Tiger Gogglescosts 1gold81silver2copperafter selling for 85silver68copper

recipe →each: 6× Light Leather, 2× Tigerseye

135–190Craft ~187× Gold Power Corecosts 2gold80silver50copperafter selling for 14gold2silver50copper

recipe →each: 1× Gold Bar

190–225Craft ~166× Advanced Target Dummycosts 92gold96silverafter selling for 41gold50silver

recipe →each: 1× Iron Strut, 1× Bronze Framework, 1× Gyrochronatom, 4× Heavy Leather

Skill 225–300: no recipe we can price here (its reagents aren't on this auction house right now, or it needs a pattern you can't buy).

Shopping list

Copy for Auctionator

166× Iron Strut58gold10silver

166× Gyrochronatom33gold20silver

664× Heavy Leather26gold56silver

187× Gold Bar16gold83silver

166× Bronze Framework16gold60silver

42× Tigerseye1gold59silver60copper

151× Copper Bar1gold51silver

26× Bronze Bar1gold29silver74copper

126× Light Leather1gold7silver10copper

48× Weak Fluxvendor48silver

30× Coarse Stone30silver

42× Rough Stone12silver60copper

At every skill point we pick the recipe with the lowest expected cost per skill-up: reagents at today's lowest (or the vendor) minus what the result fetches from a vendor (the safe minimum; the auction house is added for the few the market takes in about two days), divided by the classic skill-up chance (orange always, then falling to zero at grey). Crafts are expected counts, so luck can move them a little. Trainer recipes count as learnable 15 points before they turn yellow (their exact level isn't in the game data). Patterns that bind on pickup are left out; tradeable patterns that aren't listed right now are flagged. Trainer fees and the rank-ups (75, 150, 225) aren't included. Buying hundreds of a reagent will cost more than its lowest price.