Probably about a gram in the joint/blunt and there is a fair amount in the jar on the left. I’d bet its about 3-4 grams just in the jar on the left. They also probably included the full weight of the roll with filter, not just the herb.

2-3 grams is defintely selling it short. We also have no idea how dense the buds are. Tightly packed buds can be surprisingly heavier than loose buds.