Or even on their websites. It’s hard to include it all on the package, but a simple qr code helps.
We do this at FCP, the code goes to the product page which has the transparency info. Alongside that we share full P&L and costs for the cafe and , as soon as we have them, the toastery
Be good if it was clear on the web blurb / packet labels of roasters, as prominent as washed/natural etc.