Edit: Now I took so long to check the details someone else posted the same. ^^ What tomato above said. ^^
There's a blessing called "The courtesan", that very clearly has way higher numbers than it says in the description.
I'm somewhat certain it's a bug.
In fact, the numbers are so much higher that I can't in good conscience just take it.
It's supposedly 15%, but the effect is closer to x11. With notable fluctuation. The goldbonuspercentage variable looks correct, rising from 1 to 16, but the result is clearly not *1.16. I've set the value to 1.2 to get somewhat expected results.
Edit: At first, I thought the description of dungeon mechanics meant that it took the highest of each character, instead of adding them together. While that would have certainly been odd, I think it'd be neat to have a system where the strongest value is tested, encouraging specialization, or not all maids were available at a time, forcing a choice. It would make the whole thing a bit more tactical.