From Fallen London Wiki

Assuming you get glim from lying about clay men, this is actually not that profitable - even assuming length of grind approaching infinity (so we don't have to count the 3 actions of setup) it adds up to (3E*4+8.64E)/5=20.64/5=4,128, which is eclipsed by non-favour labyrinth grind, upgraded lab grind and many others.