
Originally Posted by
Demitrius
If the above poster's observations are accurate, the odds of getting an AB if you don't get a scroll would appear to be about 6/300, or 2%. The observed odds of getting a scroll are around 50%. Personally, I've gotten a scroll 5 of the 7 times I've done the BC, getting Crimson Jelly the other two times. If you count the 50% scroll rate into the equation, your odds are 1%. A crappy rate to say the least, but still possible, and the other higher-quality synth items might be higher.
Now consider that 1% chance in a group of 18 people. That's an 18% chance to pull an AB out. Supposing that Angel Skin, Behemoth Hides, Cloud Evokers, Siren Hair, and other good items also drop at a 1% rate, you'll average around 1 "valuable" item in an 18-man run. Plus whatever Habu Skins and Mannequin Parts, etc., you pull out.
Again, I'm making a lot of assumptions, but this seems like a likely scenario at the moment.