Indigo River seed packets are counted out. Each package has the number of seeds on there and they are actually all over packed by just a little bit.
The reason we give seed counts vs. grams (weight counts) is because that way you can know exactly how many potential plants you will have. So for instance, if you have 25 seeds in a package, you can plan your planting better. However with weight counts you can end up with any amount of seeds and you don't really know how many you are getting. So it can be difficult for garden planning.