I will not argue with the stock part. When the search _does_ finish, stock info is usually correct IME.

What grinds my gears is the speed of this search, regardless of the phone reception. Even on the desktop it feels like they have a bunch of interns running a sneakernet. Or the website is laden with pointless javascript that slows everything down before the search is actually performed.

I go to the same Home Depot every time. (Well I don't if I can help it, but that's beside the point). There is no reason they cannot store the preferred store in the localStorage or cookies or wherever else. Other stores have figured this out.