The Fidgeting Writer - doing the maths (SPOILERS)

Right now I’m converting lots of Deals with a Devil so I can confirm that those are 60% and Room Numbers are 50%. I don’t remember the exact numbers for everything else but I’m fairly certain they’re all multiples of 10% right where we thought.

Spreadsheet updated so that EPA if you have the supplies on hand subtracts the cost of those supplies.
edited by an_ocelot on 6/12/2016

Question: why is the Jade/Labyrinth route of grinding gossip for identities uncovered considered better than just chatting to Mrs Plenty?

The latter gives 6 gossip for 3 actions, while the former gives 6 gossip for 2 actions but at a cost and at least an action to get the Jade in the first place. What am I missing here?