Hi!! First off, Daddyleagues has been an immense help when conducting and I refuse to start my leagues without it. I have actually developed a trading chart that has been implemented in my leagues for the past several years, it actually uses a lot of the same categories your site uses, but with  a bit more intricacies that can be confusing to some.

you can find it here along with a link to the video that explains it!

https://docs.google.com/spreadsheets/d/1Qr64H2TRHMwRqsh6aZUTn8iIkcLzc1Dmohck6bQHHZA/edit#gid=1469849929