@Oldhip it wasn't essential but it helped me get all the upgrades I wanted. The numbers in the guide are pretty out of date right now but I'm hoping the explanation of the trading system will help people.

Do we need to trade ? i havent yet

I have been running into Wiskamug VERY often, seems like at least every half a dozen or so jumps he's in the system with me.

Is it easier to encounter Wiskamug now? Back when I played it was entirely random so it wasn't possible to get a repeatable trade route with him.

Is the Wiskamug calculated in here and a different name? No idea.

thanks!

Also note for anyone looking for general trading tips. I used this data to buy low/sell high. [eg. I bought a large quantity of Al from the guild and sold it to the Island traders, but only once] I did not do specific trading runs multiple times, as the markets are heavily influenced by your trades. I ended up with plenty of materials by endgame following that simple strategy of moving materials around for profit.

One extra last note, and slight spoiler. He9 and Adm have no use in the game yet, so don't worry about stocking up on them. You will likely need lots of Nu (~50 or more), and a fair amount of Dbe, and Chr. Eth is a good high end trade good as you only need a fixed amount for large hulls, you get consistent drops, and it sells well. Xen is only used for 1 endgame module so don't worry about stocking more than ~12. I was almost always short on Ir and U.

I took your data and made a new spreadsheet to include the other traders, and prices from my game. I updated max/min values from a mix of your data and my game, as well as after I started trading, so it won't match a new game with a clean market. Enjoy!

https://docs.google.com/spreadsheets/d/e/2PACX-1vQ1J4TPGwaNtBtSeTt6EXy2lBa3S9fW_HKGnxkWrpAiYvvLtEOVovR9St-tFbg8OCZUV_ayuaS7DOdF/pubhtml?gid=0&single=true

(Note: I haven't played the game since release so all these prices might be way out of date.)

But regarding my math, I was correct:
If you bought something for $0.87 (-13% from $1) and you sell it for $1 (=100%) then you are selling it for 114.94% of what you paid for it (=100* 1/0.87), or about 15% profit.

For the route profit you multiply the profits. Say you started with $100, you make 34% profit and now you have $134. You make +15% profit on that $134 which gives you (1+0.15)*134 = $154.1 (+54% profit). You are compounding (snowballing) your profit.

Pt from Nimion to Kyrnan adds 13 to 0 and ends up with 15%.
The route profit then shows a total that adds 34 to 15 and ends up with 54%.