Mystery Coffer or curated coffer which is cheaper?At Glirion, Maj and Urgarlag that question is just arithmetic. The problem isthat the arithmetic needs three numbers the game never shows you in one place:which sets this vendor stocks, how many shoulder variants each of those setshas, and how many of them you already own. Working it out by hand means pagingthrough the whole stickerbook.This addon goes and gets those numbers, then does the arithmetic.How it decidesBecause the goal is to collect every shoulder, one new shoulder is worthexactly as much as any other. So both offers reduce to a single comparablenumber keys spent per new shoulder:mystery = cost / P(the roll is something you don’t own)curated = cost (P is 1 by definition)Buy whichever is lower. A Mystery Coffer rolls uniformly across every shoulderthe vendor stocks, collected or not, so with N shoulders on the shelf andM still missing, P = M/N. A 1-key Mystery Coffer therefore beats an 8-keycurated one for as long as more than an eighth of the stock is missing.It also projects the whole remaining run. Mystery gets steadily worse asyour collection fills while curated stays flat, so the cheapest strategy ismystery early and curated for the tail and the addon tells you where the twocross:Finish this vendor ~55 keys the smart way (all mystery 98 / all curated 64)Where it shows upA panel at the vendor, with the verdict and every number behind it.A chat line when the store opens.Tooltip lines on the coffers themselves including a warning when acurated coffer is for a set you have already completed./coffer anywhere in the world, when you are nowhere near a vendor.Commands/coffer all three vendors/coffer 2 or /coffer maj just one of them/coffer settings the options panelIt keeps itself accurateVendor stock and prices are read off the store window rather than trusting abundled table, so stock rotations and price changes are picked up on their own.What it learns is saved account-wide, so /coffer stays accurate away fromthe vendor.RequirementsLibSets required, the addon will not load without itLibAddonMenu-2.0 optional, only powers the settings panelAvailable in English and French.Source and feedbackSource, issues and pull requests:github.com/mounirlamouri/eso-monster-coffer-helperReleased under the GPL-3.0.Bug reports are welcome especially if you find a vendor stocking a set theaddon does not recognise.