980 items being shipped then destroyed versus 1000 items being destroyed. It's 980(x+y) instead of 1000(x) I have no knowledge of the tradeoffs, but I might a

980 items being shipped then destroyed versus 1000 items being destroyed. It's 980(x+y) instead of 1000(x) I have no knowledge of the tradeoffs, but I might also imagine that the method of destruction could be worse: incineration vs landfill vs thrown in the ocean, etc