Quoting PikaDrew:
how are people selling them for 27.5$ in retail stores..
and like 27.2$ in exchange
and like 27.2$ in exchange
If you work in your own factories at $0.00 you can make it cheaper
Maybe some players still have large stockpiles, produced at lower wages, they are still working through
Also, for example @lucius sometimes sells Food Packages at a loss just to give more money back to other players, like a charity thing