add grinder plus free battery to cart
ship grinder to your home (or store pickup) and select pickup battery at some random store.
as soon as grinder marked shipped use APP to cancel battery.
You can decide if you think it's a bad thing to do or not - not picking up something you ordered and possibly preventing someone else from getting for the day or two before ships and you can cancel.
$100.76 plus tax for Grinder when you cancel battery.