yes this screen is from 1.8.0 clean. year 1888, so a little bit down the road. i also made the experience that the workshops are less static on their income. mostly in a negative way. the silversmith made 800 denars at the first 2 days and then it dropped down to 200, sometimes below. never got back to 800 again.
Workshops may start being more or less handy on higher levels, when you get several fiefs and have money to spend, so you can invest in workshops to cover just the fiefs' maintenance costs. Bottom line - right now, there are better ways to earn money than investing in workshops, especially in early game, when you need money fast and have no You can literally just spend hours murdering looters by yourself and make plenty. Once you start massacring enemy lords the denars just roll in. Workshops/Caravans/Fiefs are basically inconsequential. If you still need more money then start working on your smithing. Sell javelins for 10k each or make a fancy two-handed sword and sell it for 60k. Then you take all the wool you produced and sell it in some other city. We need more tools for managing workshops, caravans and affecting market for sure, but some people here just want to make any workshop anywhere and expect it to be profitable. Edit: Btw in this playthgough where I had monopoly on oil, oil prices in some places were 300+.