I wanted to buy some 9v batteries, and Home Depot has a box of 8 house brand, HDX, for 11.99 and they will ship it to thestore for free, so I can pick it up between Feb 21 and 24, that is, some time after the 20th.
But if I have them ship it to my home, also for free, I can have them by Feb 17.
At first that seemed wierd, but now I think it's just surprising.