From Fallen London Wiki (Staging)

Payment <a href="/wiki/In_maps" title="In maps"> in maps</a>, i.e. from <a href="/wiki/Services_Rendered:_Zailors" title="Services Rendered: Zailors"><img alt="" src="/w/images/thumb/3/3c/Crew.png/20px-Crew.png" decoding="async" loading="lazy" width="20" height="26" srcset="/w/images/thumb/3/3c/Crew.png/30px-Crew.png 1.5x, /w/images/thumb/3/3c/Crew.png/40px-Crew.png 2x" /></a> <a href="/wiki/Services_Rendered:_Zailors" title="Services Rendered: Zailors">zailors</a>, gives 1 x <a href="/wiki/Puzzling_Map" title="Puzzling Map"><img alt="" src="/w/images/thumb/4/43/Map.png/20px-Map.png" decoding="async" loading="lazy" width="20" height="26" srcset="/w/images/thumb/4/43/Map.png/30px-Map.png 1.5x, /w/images/thumb/4/43/Map.png/40px-Map.png 2x" /></a> which can be exchanged through the <a href="/wiki/Money-Making/Lategame#Crackling_Trade" title="Money-Making/Lategame">Crackling Trade</a>, and 7 x <a href="/wiki/Zee-Ztory" title="Zee-Ztory"><img alt="" src="/w/images/thumb/3/3b/Waves3.png/20px-Waves3.png" decoding="async" loading="lazy" width="20" height="26" srcset="/w/images/thumb/3/3b/Waves3.png/30px-Waves3.png 1.5x, /w/images/thumb/3/3b/Waves3.png/40px-Waves3.png 2x" /></a>:

(85 * 125/130 + 3.5 * 5) / (1600/410 * 5 + 1) = 4.84 EPA

or

(85 * 125/130 + 3.5 * 5) / (1600/450 * 5 + 1) = 5.28 EPA

So between 4.84 & 5.28 EPA