I think the vast majority of buyers would ask for a free charger because: 1) one more can't hurt, what if you lose one of the others? 2) it's free, so why not

I think the vast majority of buyers would ask for a free charger because: 1) one more can't hurt, what if you lose one of the others? 2) it's free, so why not? 3) it's free and then I can SELL it! 4) ... maybe more?