I suspect the Legendary Item probability should per read as per mille (‰) rather than as percent (%). Either that, or the expected total value of magic items has been calculated using a value of 30k for Legendary Items rather than 300k.
What I’ve done:
- I’ve created a spreadsheet for the Heroic Treasure tables, copying the data from JJ page 126.
- I’ve tried to recalculate the stated Magic Item Value (very last number in parentheses).
- To do this, I’ve used the values for magic items listed on JJ page 249, NPC Wealth Table: Common = 500 gp, Uncommon = 2,500 gp, Rare = 12,500 gp, Very Rare = 60,000 gp, Legendary 300,000 gp.
What I’ve found:
All the results are as expected except for treasures containing Legendary items. It’s as if the total value had been calculated using a value for Legendary items of 30k, but that doesn’t make sense since it would make them cheaper than Very Rare items. If I instead cut down the % of Legendary items being present by a factor of 10, reading % as ‰, I get the listed totals.