Calculate the expected profit from leveling and corrupting gems in Path of Exile. Vaal orb corruption has four equally weighted outcomes — level ±1 (capped at 21), quality ±1-10% (capped at 23%), transform into the Vaal version of the skill, or no change other than becoming corrupted. This tool prices all four outcomes and gives you the expected value per attempt.
Compare leveling profits across all skill and support gems using real-time poe.ninja prices. Filter by gem type, sort by profit margin, and find which gems are worth leveling in your secondary weapon slots or Gemcutter's Prism recipe.