This is one of these “I made this, so I might as well share it” things.
In my setting, travelling merchants are supposed to be a really big deal. And I also enjoy the players having to deal with encumbrance. Making exotic goods into a type of treasure that can be found is the sensible thing to do.
In my encumbrance system, weights are rounded up to the next multiple of 10 and then divided by 10. So the average weight for an item with an Encumbrance load of 1 is around 5 pounds. (Equally, the encumbrance limits for characters are divided by 5 to get the number of items that can be carried instead of the weight in pounds.) The quantities listed in this table have been chosen accordingly and the resulting prices and container capacities are based on the numbers from the 5th Ed. Player’s Handbook. If players come across these goods and want to take them as treasure, the only relevant number at that moment is how much they can carry while staying under the Encumbrance limits. Players won’t be trading in silk by meter but by encumbrance unit.
For the sake of simplicity, the numbers for kegs and barrels of ale and wine are rounded to easy number. The actual values for any of these goods are completely made up anyway.
|Sack of grain||30 lb.||3 sp||3|
|Sack of flour||30 lb.||6 sp||3|
|Pouch of salt||5 lb.||2 sp||1|
|Pouch of ginger||5 lb.||50 sp||1|
|Pouch of cinnamon or pepper||5 lb.||100 sp||1|
|Pouch of cloves||5 lb.||150 sp||1|
|Pouch of saffron||5 lb.||750 sp||1|
|Keg of ale||20 l||10 sp||4|
|Barrel of ale||200 l||100 sp||40|
|Keg of wine||20 l||20 sp||4|
|Barrel of wine||200 l||200 sp||40|
|Bottle of expensive wine||1 l||100 sp||1|
|Keg of expensive wine||20 l||2,000 sp||4|
|Canvas||6 sq. yd.||6 sp||1|
|Cotton cloth||20 sq. yd.||100 sp||1|
|Linen||12 sq. yd.||600 sp||1|
|Silk||24 sq. yd.||2,400 sp||1|
|Iron||5 lb.||5 sp||1|
|Copper||5 lb.||25 sp||1|
|Tin||5 lb.||100 sp||1|
|Silver||5 lb.||250 sp||1|
|Gold||5 lb.||2,500 sp||1|