Sir Poley’s On Creating a Frictionless Traveller, Part I: Trade points out that calculating trade dice modifiers is drudgery, but only needs to be done once.
The Trade Goods DM Generator for the Mongoose Traveller RPG calculates the modifiers on available & illegal trade goods from an eight-character Universal World Profile. It is written in pure JavaScript. Run it in a web browser or download the source code on GitHub.
