Every Comrade must trade goods and services to gain more glory for the State! Information button (i) will show you cost of each Industry you wish to acquire. Resources you do not have enough of are marked in red.
For being handy as well as dandy, information button can be tapped to see full specifications of Industry, including output, Researcher and current boosts.
For example, Cold Storages cost many Barges! If you are working on a mission to collect Barges, you may hold off on buying more Cold Storages.
Pro Tip: Upgrade your discount Researchers to lower Industry purchase prices and your resources will go further!