T2 invention: what to invent and build near Jita

Each attempt succeeds with the item's base chance (34% for modules, ammo and drones) times 1 + Encryption Methods / 40 + (the two science skills) / 30, times the decryptor's modifier. A success is a Tech 2 blueprint copy with the item's base runs (5 or 10 here), ME 2 and TE 4, adjusted by the decryptor. A failure still eats the datacores, the decryptor and one run of your Tech 1 copy. ME is Material Efficiency (each point cuts materials by 1%) and TE is Time Efficiency (each point cuts build time by 1%). "Best for each line" tries all nine options and keeps the one that makes the most ISK a day for your skills. Tap a row to see the comparison.

Job fees are the item's estimated value times the system's cost index, plus 0.25% station tax, plus the 4% SCC surcharge (a flat game-wide levy). Jita's manufacturing index is the highest in New Eden: the same build two or three jumps away can cost a fifth of the fee, and even the nearest lab system roughly halves it. No station in the Jita system has a research lab at all, so invention and copying always run in a neighbouring system. Today's indices:

Invention and copy job fees are 2% of the item's value times the same index, so they barely matter. Player structures with rigs are cheaper still, but you have to find one that lets you use it.

• Materials at today's Jita sell price for one job of the copy's runs, with the copy's ME applied and EVE's per-job rounding.
• Invention cost per job = one attempt's datacores, decryptor and job fees, divided by the odds: what you spend on average to get one copy.
• Selling uses the same model as the station-trading tool: one sell order a tick under the best price, broker fee and sales tax from your skills, and the cost of repricing while you sit on the list, from how often that item's top price is beaten.
• Jobs a day = the slowest of factory slots / build days, lab slots / lab days, and your share of daily sales / units per job. The detail row says which one limits you.
• The blueprint is a one-off purchase, spread over 30 days in the daily figure and counted in full in "to start".

• A The item's undercut rate and top-seller share are measured at Jita, and it trades every day at a steady price.
• B Partly measured, or a steady item where only broader measures apply.
• C Thin data: it trades on fewer days or its price swings. Size your first job small.

Invention odds and job fees are exact game mechanics, checked against EVE Ref's cost calculator on 2026-09-28. The uncertain parts are prices moving and how much of the market you win.

• Rigs and ships: their copies invent to a single run, so every attempt buys one build. Modules, ammo and drones invent to 5 or 10 runs, which is where a small wallet goes furthest.
• Anything whose Tech 1 blueprint is not sold on the Jita market (LP-store blueprints price at zero and fake the margin).
• Items with no Jita sell book, a price far from the last week's average, under 5 sales a day, or falling prices.
• Lines that do not clear your minimum margin, or cost more to start than your wallet.

• Station-level demand. "Traded a day" is EVE's official history for the whole region. The undercut and top-seller measures are ours and are taken at Jita 4-4.
• Your standings. Good standings with the station owners lower the broker fee a little more.
• Hauling. Materials are priced at Jita. You carry them to the lab and the factory, and the finished items back to Jita to sell, yourself.
• Everyone else. A line that many players start at once gets crowded. Steady, deep markets rank higher for that reason.
• Prices after the snapshot. Refreshed every hour, not live.

Same ISK, different lane: the station trading tool shows what the wallet earns without ever building anything. Fees: sales tax 7.5% less 11% per Accounting level, broker fee 3% less 0.3% per Broker Relations level (1% floor). Order books from EVE Ref's snapshots of EVE's official market API. Recipes, odds and times from EVE Ref's reference data.